bike rack vs bike parking rack

bike rack and bike parking rack both are nouns.

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

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

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

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