ensure vs spot-check

ensure and spot-check both are verbs.

Word	Noun	Adjective	Verb	Adverb
ensure	No	No	Yes	No
spot-check	No	No	Yes	No

As verbs, spot-check is a hyponym of ensure; that is, spot-check is a word with a more specific, narrower meaning than ensure:

ensure: be careful or certain to do something; make certain of something
spot-check: pick out random samples for examination in order to ensure high quality

Other hyponyms of ensure include proof, proofread, control, double-check, cross-check, cinch, card, cover.

ensure (verb)	spot-check (verb)
be careful or certain to do something; make certain of something	pick out random samples for examination in order to ensure high quality
make certain of