spot-check vs see to it

spot-check and see to it both are verbs.

Word	Noun	Adjective	Verb	Adverb
spot-check	No	No	Yes	No
see to it	No	No	Yes	No

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

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

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

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