pipe vs tobacco pipe

pipe and tobacco pipe both are nouns.

Word	Noun	Adjective	Verb	Adverb
pipe	Yes	No	Yes	No
tobacco pipe	Yes	No	No	No

As nouns, pipe and tobacco pipe are synonyms defined as:

pipe and tobacco pipe: a tube with a small bowl at one end; used for smoking tobacco

pipe (noun)	tobacco pipe (noun)
a long tube made of metal or plastic that is used to carry water or oil or gas etc.	a tube with a small bowl at one end; used for smoking tobacco
a tube with a small bowl at one end; used for smoking tobacco
the flues and stops on a pipe organ
a tubular wind instrument
a hollow cylindrical shape