achondroplasia vs osteosclerosis congenita

achondroplasia and osteosclerosis congenita both are nouns.

Word	Noun	Adjective	Verb	Adverb
achondroplasia	Yes	No	No	No
osteosclerosis congenita	Yes	No	No	No

As nouns, achondroplasia and osteosclerosis congenita are synonyms defined as:

achondroplasia and osteosclerosis congenita: an inherited skeletal disorder beginning before birth; cartilage is converted to bone resulting in dwarfism

Other synonyms of achondroplasia include achondroplasty, chondrodystrophy.

achondroplasia (noun)	osteosclerosis congenita (noun)
an inherited skeletal disorder beginning before birth; cartilage is converted to bone resulting in dwarfism	an inherited skeletal disorder beginning before birth; cartilage is converted to bone resulting in dwarfism