embark on vs start up

embark on and start up both are verbs.

Word	Noun	Adjective	Verb	Adverb
embark on	No	No	Yes	No
start up	No	No	Yes	No

As verbs, embark on and start up are synonyms defined as:

Other synonyms of embark on include commence, start.

embark on (verb)	start up (verb)
get off the ground	get off the ground
	get going or set in motion