porterhouse vs beefsteak

porterhouse and beefsteak both are nouns.

Word	Noun	Adjective	Verb	Adverb
porterhouse	Yes	No	No	No
beefsteak	Yes	No	No	No

As nouns, beefsteak is a hypernym of porterhouse; that is, beefsteak is a word with a broader meaning than porterhouse:

porterhouse: large steak from the thick end of the short loin containing a T-shaped bone and large piece of tenderloin
beefsteak: a beef steak usually cooked by broiling

porterhouse (noun)	beefsteak (noun)
large steak from the thick end of the short loin containing a T-shaped bone and large piece of tenderloin	a beef steak usually cooked by broiling