bicycle parking rack vs bike rack

bicycle parking rack and bike rack both are nouns.

Word	Noun	Adjective	Verb	Adverb
bicycle parking rack	Yes	No	No	No
bike rack	Yes	No	No	No

As nouns, bicycle parking rack and bike rack are synonyms defined as:

Other synonyms of bicycle parking rack include bicycle rack, bicycle stand, bike parking rack, bike stand.

bicycle parking rack (noun)	bike rack (noun)
a rack for parking bicycles	a rack for parking bicycles