commence vs enter

commence and enter both are verbs.

Word	Noun	Adjective	Verb	Adverb
commence	No	No	Yes	No
enter	No	No	Yes	No

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

commence (verb)	enter (verb)
take the first step or steps in carrying out an action	set out on (an enterprise or subject of study)
set in motion, cause to start	make a record of; set down in permanent form
get off the ground	become a participant; be involved in
	put or introduce into something
	come on stage
	to come or go into
	take on duties or office
	register formally as a participant or member
	be or play a part of or in