widen vs white out

widen and white out both are verbs.

Word	Noun	Adjective	Verb	Adverb
widen	No	No	Yes	No
white out	No	No	Yes	No

As verbs, white out is a hyponym of widen; that is, white out is a word with a more specific, narrower meaning than widen:

widen (verb)	white out (verb)
become broader or wider or more extensive	widen the interlinear spacing by inserting leads
extend in scope or range or area	cover up with a liquid correction fluid
make wider
make (clothes) larger