Stenotaphrum secundatum vs St. Augustine grass

Stenotaphrum secundatum and St. Augustine grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Stenotaphrum secundatum	Yes	No	No	No
St. Augustine grass	Yes	No	No	No

As nouns, Stenotaphrum secundatum and St. Augustine grass are synonyms defined as:

Stenotaphrum secundatum and St. Augustine grass: low mat-forming grass of southern United States and tropical America; grown as a lawn grass

Other synonyms of Stenotaphrum secundatum include buffalo grass.

Stenotaphrum secundatum (noun)	St. Augustine grass (noun)
low mat-forming grass of southern United States and tropical America; grown as a lawn grass	low mat-forming grass of southern United States and tropical America; grown as a lawn grass