family Orchidaceae vs orchid family

family Orchidaceae and orchid family both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Orchidaceae	Yes	No	No	No
orchid family	Yes	No	No	No

As nouns, family Orchidaceae and orchid family are synonyms defined as:

family Orchidaceae and orchid family: enormous cosmopolitan family of perennial terrestrial or epiphytic plants with fleshy tubers or rootstocks and unusual flowers

Other synonyms of family Orchidaceae include Orchidaceae.

family Orchidaceae (noun)	orchid family (noun)
enormous cosmopolitan family of perennial terrestrial or epiphytic plants with fleshy tubers or rootstocks and unusual flowers	enormous cosmopolitan family of perennial terrestrial or epiphytic plants with fleshy tubers or rootstocks and unusual flowers