Line vs String

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

Line

Top 1,000 (very common)A1noun

String

Top 1,000 (very common)B1noun
 LineString
Pronunciation🇬🇧 /["/laɪn/"]/🇺🇸 /["/laɪn/"]/🇬🇧 /["/strɪŋ/"]/🇺🇸 /["/strɪŋ/"]/
MeaningA long mark or a row of things.A thin piece of material like thread or cord.
ExamplePlease stand in a line to buy your tickets.She tied the package with a string to keep it closed.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA1B1
Part of speechnounnoun
Collocationslong, short, thick, draw, mark, run, divide something, separate something, in a line, a line of latitude, a line of longitude, long, short, thick, draw, mark, run, divide something, separate something, in a line, a line of latitude, a line of longitude, worry, deep, faint, have, run, appear, long, short, new, form, in a/​the line, on a/​the line, long, short, checkout, form, in line, direct, trunk, power, hold, be busy, be engaged, be dead, down the line, on the line, on line, rail, railway, train, take, on a/​the line, the end of the line, long, short, new, form, in a/​the line, on a/​the line, learn, practise/​practice, recite, direct, trunk, power, hold, be busy, be engaged, be dead, down the line, on the line, on line, broad, firm, hard, adopt, follow, pursue, in line with, out of line with, line on, a line of argument, a line of reasoning, a line of attack, broad, firm, hard, adopt, follow, pursue, in line with, out of line with, line on, a line of argument, a line of reasoning, a line of attack, battle, defensive, firing, behind enemy lines, in the front line, on the front linetaut, tight, loose, bit, length, piece, tie, tie something up with, undo, vest, in the string, string of, open, guitar, violin, tune, loosen, tighten, break, vibrate, instrument, on a/​the string
Antonymscurve, scatterrope, chain, wire
Common mistakesConfused with 'line' as a boundary vs 'line' as a row., Using 'line' as a verb without context., Mixing up 'line' with 'lyne' in spelling.Confused with 'strap' for thicker materials., Using 'strings' instead of 'string' when referring to one piece., Mispronouncing as 'st-ring' instead of 'string'.
Usage notesThe word 'line' can refer to physical marks, waiting lines, or categories. In formal contexts, be specific (e.g., 'line of code'). Informal use often refers to lines in conversation or jokes.Use 'string' when referring to anything thin and flexible. It's commonly used in crafts, music, and tying things together. Avoid using it in very formal contexts.

Frequently asked questions: Line vs String

What's the difference between Line and String?

Line: A long mark or a row of things. String: A thin piece of material like thread or cord.

Are Line and String the same CEFR level?

Line: A1, String: B1 on the CEFR scale.

Can I use Line and String interchangeably?

Not always. Line and String 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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