tummy vs bay window

tummy and bay window both are nouns.

Word	Noun	Adjective	Verb	Adverb
tummy	Yes	No	No	No
bay window	Yes	No	No	No

As nouns, tummy and bay window are synonyms defined as:

Other synonyms of tummy include corporation, pot, potbelly.

tummy (noun)	bay window (noun)
an enlarged and muscular saclike organ of the alimentary canal; the principal organ of digestion	a window that sticks out from the outside wall of a house
slang for a paunch	slang for a paunch