warmvswarnWhat's the difference?

Quick tell: warm is a adjective, warn is a verb, so they fill different roles in a sentence.

Which to use

“warm” is an adjective and “warn” is a verb - they look or sound alike but fill different roles in a sentence.

#2,025
“warm” frequency rank
#6,976
“warn” frequency rank
9001
confusion score

Side-by-Side Comparison

Feature warm warn
Definition Of a somewhat high temperature, often but not always connoting that the high temperature is pleasant rather than uncomfortable. To make (someone) aware of (something impending); especially:

Where the eye mixes warm and warn

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
warm
4 ch
warn

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: warm is /wɔːm/ while warn is /wɔːn/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - m in “warm” becomes n in “warn”, and the parts of speech differ too (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 9001, derived from the frequency rank of both members and their visual similarity.

warm is recorded at frequency rank #2,025, classified as anadj, pronounced /wɔːm/. warn is at rank #6,976, tagged as averb, pronounced /wɔːn/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 9001, this pair ranks #499,583 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of warm vs warn

Shared letters: arw. Private to "warm": m. Private to "warn": n.

"warm" · 4 letters · shape CVCC  ·  "warn" · 4 letters · shape CVCC

Known mistypes of this pair

  • warmawrm · wamr · warmm · warrm · wram · wwarm
  • warnawrn · wanr · warnn · warrn · wran · wwarn

Frequently Asked Questions

Can "warm" and "warn" be used interchangeably?
No - they are not even the same part of speech. "warm" is an adjective and "warn" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "warm" or "warn"?
"warm" is the more common of the two: it sits at frequency rank #2,025 in our English list, against #6,976 for "warn". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list