St. Augustine grass vs Stenotaphrum secundatum

St. Augustine grass and Stenotaphrum secundatum both are nouns.

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

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

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

Other synonyms of St. Augustine grass include buffalo grass.

St. Augustine grass (noun)	Stenotaphrum secundatum (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