foreland vs promontory

foreland and promontory both are nouns.

Word	Noun	Adjective	Verb	Adverb
foreland	Yes	No	No	No
promontory	Yes	No	No	No

As nouns, foreland and promontory are synonyms defined as:

foreland and promontory: a natural elevation (especially a rocky one that juts out into the sea)

Other synonyms of foreland include head, headland.

foreland (noun)	promontory (noun)
a natural elevation (especially a rocky one that juts out into the sea)	a natural elevation (especially a rocky one that juts out into the sea)
land forming the forward margin of something