check out vs run down

check out and run down both are verbs.

Word	Noun	Adjective	Verb	Adverb
check out	No	No	Yes	No
run down	No	No	Yes	No

As verbs, check out and run down are synonyms defined as:

check out (verb)	run down (verb)
examine so as to determine accuracy, quality, or condition	use up all one's strength and energy and stop working
announce one's departure from a hotel	injure or kill by knocking (someone or something) down and passing over the body, as with a vehicle
try to learn someone's opinions and intentions	pursue until captured
record, add up, and receive payment for items purchased	move downward
withdraw money by writing a check	examine hastily
trace	deplete
be verified or confirmed; pass inspection	trace