femoris vs thighbone

femoris and thighbone both are nouns.

Word	Noun	Adjective	Verb	Adverb
femoris	Yes	No	No	No
thighbone	Yes	No	No	No

As nouns, femoris and thighbone are synonyms defined as:

femoris and thighbone: the longest and thickest bone of the human skeleton; extends from the pelvis to the knee

Other synonyms of femoris include femur.

femoris (noun)	thighbone (noun)
the longest and thickest bone of the human skeleton; extends from the pelvis to the knee	the longest and thickest bone of the human skeleton; extends from the pelvis to the knee