elevation vs promontory

elevation and promontory both are nouns.

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

As nouns, promontory is a hyponym of elevation; that is, promontory is a word with a more specific, narrower meaning than elevation:

elevation: a raised or elevated geological formation
promontory: a natural elevation (especially a rocky one that juts out into the sea)

Other hyponyms of elevation include highland, upland, hill, mount, mountain, foreland, head, headland, ridge, swell.

elevation (noun)	promontory (noun)
the act of increasing the wealth or prestige or power or scope of something	a natural elevation (especially a rocky one that juts out into the sea)
drawing of an exterior of a structure
distance of something above a reference point (such as sea level)
(ballet) the height of a dancer's leap or jump
the event of something being raised upward
a raised or elevated geological formation
angular distance above the horizon (especially of a celestial object)
the highest level or degree attainable; the highest stage of development