spend vs commit

spend and commit both are verbs.

Word	Noun	Adjective	Verb	Adverb
spend	No	No	Yes	No
commit	No	No	Yes	No

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

spend (verb)	commit (verb)
pay out	make a set of changes permanent
spend completely	transfer to another place so something can be kept or preserved
use up a period of time in a specific way	give entirely to a specific person, activity, or cause
	confer a trust upon
	cause to be admitted; of persons to an institution
	make an investment
	perform an act, usually with a negative connotation
	engage in or perform