saddle roof vs gambrel

saddle roof and gambrel both are nouns.

Word	Noun	Adjective	Verb	Adverb
saddle roof	Yes	No	No	No
gambrel	Yes	No	No	No

As nouns, gambrel is a hyponym of saddle roof; that is, gambrel is a word with a more specific, narrower meaning than saddle roof:

saddle roof: a double sloping roof with a ridge and gables at each end
gambrel: a gable roof with two slopes on each side and the lower slope being steeper

Other hyponyms of saddle roof include gambrel roof.

saddle roof (noun)	gambrel (noun)
a double sloping roof with a ridge and gables at each end	a gable roof with two slopes on each side and the lower slope being steeper