pterygoid process vs outgrowth

pterygoid process and outgrowth both are nouns.

Word	Noun	Adjective	Verb	Adverb
pterygoid process	Yes	No	No	No
outgrowth	Yes	No	No	No

As nouns, outgrowth is a hypernym of pterygoid process; that is, outgrowth is a word with a broader meaning than pterygoid process:

pterygoid process: two bony processes descending from the body of the sphenoid bone
outgrowth: a natural prolongation or projection from a part of an organism either animal or plant

Other hypernyms of pterygoid process include appendage, process.

pterygoid process (noun)	outgrowth (noun)
two bony processes descending from the body of the sphenoid bone	a natural prolongation or projection from a part of an organism either animal or plant
	the gradual beginning or coming forth
	a natural consequence of development