demarcate vs delimit

demarcate and delimit both are verbs.

Word	Noun	Adjective	Verb	Adverb
demarcate	No	No	Yes	No
delimit	No	No	Yes	No

As verbs, demarcate and delimit are synonyms defined as:

Other synonyms of demarcate include delimitate.

demarcate (verb)	delimit (verb)
set, mark, or draw the boundaries of something	set, mark, or draw the boundaries of something
separate clearly, as if by boundaries	determine the essential quality of
	be opposite to; of angles and sides, in geometry