veg out vs slow down

veg out and slow down both are verbs.

Word	Noun	Adjective	Verb	Adverb
veg out	No	No	Yes	No
slow down	No	No	Yes	No

As verbs, slow down is a hypernym of veg out; that is, slow down is a word with a broader meaning than veg out:

Other hypernyms of veg out include decompress, loosen up, relax, unbend, unwind.

veg out (verb)	slow down (verb)
engage in passive relaxation	become less tense, rest, or take one's ease
	lose velocity; move more slowly
	become slow or slower
	reduce the speed of
	cause to proceed more slowly