Experiment vs Research vs Study vs Test vs Trial

When to use each in English, with meaning, register, and examples.

Experiment

Top 1,000 (very common)A2noun

Research

Top 1,000 (very common)A2noun

Study

Top 1,000 (very common)A1noun

Test

Top 1,000 (very common)A1noun

Trial

Top 1,000 (very common)B2noun
 ExperimentResearchStudyTestTrial
Pronunciation🇬🇧 /["/ɪkˈsperɪmənt/"]/🇺🇸 /["/ɪkˈsperɪmənt/"]/🇬🇧 /["/rɪˈsɜːtʃ//ˈriːsɜːtʃ/"]/🇺🇸 /["/ˈriːsɜːrtʃ//rɪˈsɜːrtʃ/"]/🇬🇧 /["/ˈstʌdi/"]/🇺🇸 /["/ˈstʌdi/"]/🇬🇧 /["/test/"]/🇺🇸 /["/test/"]/🇬🇧 /["/ˈtraɪəl/"]/🇺🇸 /["/ˈtraɪəl/"]/
MeaningA test to find out something new.The act of studying something carefully to learn more about it.To learn about something by reading, practicing, or working.An exam to check knowledge or skills.A test to see if something is good or works well.
ExampleThe scientist conducted an experiment to test her hypothesis.The research on climate change is very important for our future.I need to do my study for math class.I have a math test tomorrow and I need to study.The trial lasted for three weeks and involved numerous witnesses.
RegisterNeutralNeutralNeutralNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)Top 1,000 (very common)Top 1,000 (very common)Top 1,000 (very common)
CEFR levelA2A2A1A1B2
Part of speechnounnounnounnounnoun
Collocationsanimal, field, laboratory, carry out, conduct, do, confirm something, demonstrate something, find something, by experiment, during an/​the experiment, in an/​the experiment, animal, field, laboratory, carry out, conduct, do, confirm something, demonstrate something, find something, by experiment, during an/​the experiment, in an/​the experimentcareful, detailed, in-depth, piece, carry out, conduct, do, demonstrate something, find something, identify something, degree, effort, programme/​program, research in, research into, research on, an area of research, focus your research on something, somebody’s own researchfull-time, part-time, graduate, course, programme/​program, take up, group, programme/​program, leave, study for, an area of study, a field of study, further, begin, undertake, continue, area, business, cultural, do, lecture in, teach, department, course, programme/​program, current, new, present, commission, fund, support, take place, aim at something, aim to do something, group, session, according to a/​the study, in a/​the study, under study, an area of study, a field of study, the author of a/​the studydemanding, difficult, gruelling/​grueling, do, sit, take, result, score, conditions, in a/​the test, on a/​the test, test in, exhaustive, extensive, rigorous, number, series, have, undergo, carry out, take place, confirm something, demonstrate something, result, data, statistics, test for, test on, exhaustive, extensive, rigorous, number, series, have, undergo, carry out, take place, confirm something, demonstrate something, result, data, statistics, test for, test on, good, critical, crucial, pose, provide, put somebody/​something to the test, case, the acid test, the litmus test, stand the test of timefair, unfair, full, come to, face, go on, proceed, take place, begin, attorney, court, judge, at the trial, during the trial, on trial, clinical, experimental, field, carry out, conduct, do, demonstrate something, show something, find something, period, run, data, on trial, under trial, on a trial basis, trial by fire, trial and error, clinical, experimental, field, carry out, conduct, do, demonstrate something, show something, find something, period, run, data, on trial, under trial, on a trial basis, trial by fire, trial and error, real, trial to, trials and tribulations
Antonymscertainty, factignorance, inactivityignore, neglect, overlookguess, ignore, neglectcertainty, conclusion
Common mistakesConfused with 'experience' which refers to knowledge gained over time., Using 'experiments' as a verb instead of the noun form., Saying 'experimenting of' instead of 'experimenting with'.Using 'research' as an uncountable noun instead of a countable noun (e.g., saying 'a research' instead of 'a piece of research'), Confusing 'research' with 'search' (research is more in-depth and analytical), Using 'research' inappropriately in non-academic contexts'Study' is often confused with 'study for'; learners may incorrectly say 'study the exam'., Learners might forget to use 'study' with an object, saying 'I study' instead of 'I study math'., Misusing prepositions, saying 'study at school' instead of 'study in school'.Confused with 'testify' — they mean different things., Using 'test' as a countable noun incorrectly., Mixing up 'tested' and 'testing’ in verb forms.Confused with 'trial' as a verb — remember it's primarily a noun in this context., Using 'trial' to refer to a single test when it often implies multiple evaluations., Mixing up 'trial' with 'trial run' — the latter is specifically about practice or testing something before the final version.
Usage notesUsed in scientific contexts but can also refer to trying new ideas in everyday life. More formal in academic writing.Used in academic and professional contexts. Avoid using 'research' as a verb in casual conversation; instead, use 'study' or 'look into'.Used in academic and everyday contexts. Avoid using in highly informal situations where simpler words could suffice.Used in educational contexts for quizzes or exams. Can also refer to trials in scientific or real-world situations. Avoid in informal contexts unless using slang.Used in legal contexts to refer to court cases, or in general contexts to describe testing products. Avoid using in casual conversations when discussing failures.

Frequently asked questions: Experiment vs Research vs Study vs Test vs Trial

What's the difference between Experiment, Research, Study, Test, and Trial?

Experiment: A test to find out something new. Research: The act of studying something carefully to learn more about it. Study: To learn about something by reading, practicing, or working. Test: An exam to check knowledge or skills. Trial: A test to see if something is good or works well.

Are Experiment, Research, Study, Test, and Trial the same CEFR level?

Experiment: A2, Research: A2, Study: A1, Test: A1, Trial: B2 on the CEFR scale.

Can I use Experiment, Research, Study, Test, and Trial interchangeably?

Not always. Experiment, Research, Study, Test, and Trial are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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