Problem vs That's an issue

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

Problem

Top 1,000 (very common)A1noun

That's an issue

Top 2,000 (common)
Most common: Problem
 ProblemThat's an issue
Pronunciation🇬🇧 /["/ˈprɒbləm/"]/🇺🇸 /["/ˈprɑːbləm/"]/🇬🇧 //ðæts ən ˈɪʃuː//🇺🇸 //ðæts ən ˈɪʃu//
MeaningA difficulty or issue that needs to be solved.It's a problem or concern.
ExampleMath can be hard, but I will solve this problem.That's an issue we need to resolve before the project deadline.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA1-
Part of speechnoun
Collocationsacute, big, enormous, host, set, be, pose, present (somebody with), arise, come up, crop up, area, spot, behaviour/​behavior, problem about, problem for, problem of, an approach to a problem, the crux of the problem, the heart of the problem, complicated, difficult, easy, do, find the answer to, solve, setaddress an issue, report an issue, identify an issue, resolve an issue, discuss an issue
Antonymssolution, answer, resolution-
Common mistakes'Problem' is often confused with 'trouble'—these words have slightly different meanings., Some learners may use 'problems' incorrectly with uncountable nouns., Use the phrase 'to solve a problem' instead of 'to fix a problem'.Using 'issue' interchangeably with 'problem' without context., Saying 'that's issues' instead of 'that's an issue'., Overusing this phrase in positive contexts.
Usage notesUse 'problem' in both formal and informal contexts. Avoid using in overly casual situations when a lighter term might fit, like 'issue' or 'challenge'.Use this phrase to point out a problem during discussions. It works well in both formal meetings and casual conversations.

See it in real clips

Problem
That's an issue

Frequently asked questions: Problem vs That's an issue

What's the difference between Problem and That's an issue?

Problem: A difficulty or issue that needs to be solved. That's an issue: It's a problem or concern.

Which is more common: Problem and That's an issue?

Problem is the most common in everyday English.

Can you show an example of each?

Problem: Math can be hard, but I will solve this problem. That's an issue: That's an issue we need to resolve before the project deadline.

Can I use Problem and That's an issue interchangeably?

Not always. Problem and That's an issue 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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