Hirundo pyrrhonota vs cliff swallow

Hirundo pyrrhonota and cliff swallow both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hirundo pyrrhonota	Yes	No	No	No
cliff swallow	Yes	No	No	No

As nouns, Hirundo pyrrhonota and cliff swallow are synonyms defined as:

Hirundo pyrrhonota and cliff swallow: North American swallow that lives in colonies and builds bottle-shaped mud nests on cliffs and walls

Hirundo pyrrhonota (noun)	cliff swallow (noun)
North American swallow that lives in colonies and builds bottle-shaped mud nests on cliffs and walls	North American swallow that lives in colonies and builds bottle-shaped mud nests on cliffs and walls