skeletal frame vs skeleton

skeletal frame and skeleton both are nouns.

Word	Noun	Adjective	Verb	Adverb
skeletal frame	Yes	No	No	No
skeleton	Yes	No	No	No

As nouns, skeletal frame and skeleton are synonyms defined as:

skeletal frame and skeleton: the internal supporting structure that gives an artifact its shape

Other synonyms of skeletal frame include frame, underframe.

skeletal frame (noun)	skeleton (noun)
the internal supporting structure that gives an artifact its shape	the internal supporting structure that gives an artifact its shape
	the hard structure (bones and cartilages) that provides a frame for the body of an animal
	a scandal that is kept secret
	something reduced to its minimal form