frontal eminence vs swelling

frontal eminence and swelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
frontal eminence	Yes	No	No	No
swelling	Yes	No	No	No

As nouns, swelling is a hypernym of frontal eminence; that is, swelling is a word with a broader meaning than frontal eminence:

frontal eminence: either prominence of the frontal bone above each orbit
swelling: something that bulges out or is protuberant or projects from its surroundings

Other hypernyms of frontal eminence include bulge, bump, excrescence, extrusion, gibbosity, gibbousness, hump, jut, prominence, protrusion, protuberance.

frontal eminence (noun)	swelling (noun)
either prominence of the frontal bone above each orbit	the increase in volume of certain substances when they are heated (often accompanied by release of water)
	something that bulges out or is protuberant or projects from its surroundings
	an abnormal protuberance or localized enlargement