tie up vs commit

tie up and commit both are verbs.

Word	Noun	Adjective	Verb	Adverb
tie up	No	No	Yes	No
commit	No	No	Yes	No

As verbs, commit is a hypernym of tie up; that is, commit is a word with a broader meaning than tie up:

Other hypernyms of tie up include invest, place, put.

tie up (verb)	commit (verb)
secure with or as if with ropes	make a set of changes permanent
finish the last row	transfer to another place so something can be kept or preserved
restrain from moving or operating normally	give entirely to a specific person, activity, or cause
secure in or as if in a berth or dock	confer a trust upon
invest so as to make unavailable for other purposes	cause to be admitted; of persons to an institution
	make an investment
	perform an act, usually with a negative connotation
	engage in or perform