Polyangiaceae vs family Polyangiaceae

Polyangiaceae and family Polyangiaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Polyangiaceae	Yes	No	No	No
family Polyangiaceae	Yes	No	No	No

As nouns, Polyangiaceae and family Polyangiaceae are synonyms defined as:

Polyangiaceae and family Polyangiaceae: bacteria living mostly in soils and on dung

Other synonyms of Polyangiaceae include family Myxobacteriaceae, Myxobacteriaceae.

Polyangiaceae (noun)	family Polyangiaceae (noun)
bacteria living mostly in soils and on dung	bacteria living mostly in soils and on dung