glenoid fossa vs glenoid cavity

glenoid fossa and glenoid cavity both are nouns.

Word	Noun	Adjective	Verb	Adverb
glenoid fossa	Yes	No	No	No
glenoid cavity	Yes	No	No	No

As nouns, glenoid fossa and glenoid cavity are synonyms defined as:

glenoid fossa and glenoid cavity: the concavity in the head of the scapula that receives the head of the humerus to form the shoulder joint

glenoid fossa (noun)	glenoid cavity (noun)
the concavity in the head of the scapula that receives the head of the humerus to form the shoulder joint	the concavity in the head of the scapula that receives the head of the humerus to form the shoulder joint
a deep concavity in the temporal bone at the root of the zygomatic arch that receives the condyle of the mandible