spot-check vs ensure

spot-check and ensure both are verbs.

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

As verbs, ensure is a hypernym of spot-check; that is, ensure is a word with a broader meaning than spot-check:

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

Other hypernyms of spot-check include ascertain, assure, check, control, insure, see, see to it.

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