ingest vs sample

ingest is not a noun while sample is a noun.

Word	Noun	Adjective	Verb	Adverb
ingest	No	No	Yes	No
sample	Yes	No	Yes	No

As verbs, sample is a hyponym of ingest; that is, sample is a word with a more specific, narrower meaning than ingest:

ingest (noun)	sample (noun)
	a small part of something intended as representative of the whole
	items selected at random from a population and used to test hypotheses about the population
	all or part of a natural object that is collected and preserved as an example of its class

ingest (verb)	sample (verb)
take up mentally	take a sample of
serve oneself to, or consume regularly