knewvsknobWhat's the difference?

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

Which to use

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

#635
“knew” frequency rank
#15,203
“knob” frequency rank
15838
confusion score

Side-by-Side Comparison

Feature knew knob
Definition simple past of know A rounded protuberance, especially one arising from a flat surface; a fleshy lump or caruncle.

Where the eye mixes knew and knob

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
knew
4 ch
knob

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: knew is /ˈnjuː/ while knob is /nɒb/. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 15838, derived from the frequency rank of both members and their visual similarity.

knew is recorded at frequency rank #635, classified as averb, pronounced /ˈnjuː/. knob is at rank #15,203, tagged as anoun, pronounced /nɒb/.

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 15838, this pair ranks #461,477 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of knew vs knob

Shared letters: kn. Private to "knew": ew. Private to "knob": bo.

"knew" · 4 letters · shape CCVC  ·  "knob" · 4 letters · shape CCVC

Known mistypes of this pair

  • knewkenw · kknew · kneww · knnew · knwe · nkew
  • knobkknob · knbo · knnob · knobb · konb · nkob

Frequently Asked Questions

Can "knew" and "knob" be used interchangeably?
No - they are not even the same part of speech. "knew" is a verb and "knob" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "knew" or "knob"?
"knew" is the more common of the two: it sits at frequency rank #635 in our English list, against #15,203 for "knob". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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

Source: FrequencyWords open word-frequency list