male-patterned baldness vs male pattern baldness

male-patterned baldness and male pattern baldness both are nouns.

Word	Noun	Adjective	Verb	Adverb
male-patterned baldness	Yes	No	No	No
male pattern baldness	Yes	No	No	No

As nouns, male-patterned baldness and male pattern baldness are synonyms defined as:

male-patterned baldness and male pattern baldness: loss of hair on the crown of the head

male-patterned baldness (noun)	male pattern baldness (noun)
loss of hair on the crown of the head	loss of hair on the crown of the head