fence line vs delimitation

fence line and delimitation both are nouns.

Word	Noun	Adjective	Verb	Adverb
fence line	Yes	No	No	No
delimitation	Yes	No	No	No

As nouns, delimitation is a hypernym of fence line; that is, delimitation is a word with a broader meaning than fence line:

Other hypernyms of fence line include border, borderline, boundary line, mete.

fence line (noun)	delimitation (noun)
a boundary line created by a fence	a line that indicates a boundary