lavvslexWhat's the difference?

Quick tell: lav is a noun, lex is a verb, so they fill different roles in a sentence.

Which to use

“lav” is a noun and “lex” is a verb - they look or sound alike but fill different roles in a sentence.

#48,859
“lav” frequency rank
#14,983
“lex” frequency rank
63842
confusion score

Side-by-Side Comparison

Feature lav lex
Definition Clipping of lavatory. To perform lexical analysis; to convert a character stream to a token stream as a preliminary to parsing.

Where the eye mixes lav and lex

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
lav
3 ch
lex

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: lav is /læv/ while lex is /lɛks/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 63842, derived from the frequency rank of both members and their visual similarity.

lav is recorded at frequency rank #48,859, classified as anoun, pronounced /læv/. lex is at rank #14,983, tagged as averb, pronounced /lɛks/.

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 63842, this pair ranks #80,799 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of lav vs lex

Shared letters: l. Private to "lav": av. Private to "lex": ex.

"lav" · 3 letters · shape CVC  ·  "lex" · 3 letters · shape CVC

Frequently Asked Questions

Can "lav" and "lex" be used interchangeably?
No - they are not even the same part of speech. "lav" is a noun and "lex" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "lav" or "lex"?
"lex" is the more common of the two: it sits at frequency rank #14,983 in our English list, against #48,859 for "lav". 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