Yorkshire fog vs Holcus lanatus

Yorkshire fog and Holcus lanatus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Yorkshire fog	Yes	No	No	No
Holcus lanatus	Yes	No	No	No

As nouns, Yorkshire fog and Holcus lanatus are synonyms defined as:

Yorkshire fog and Holcus lanatus: tall European perennial grass having a velvety stem; naturalized in United States and used for forage

Other synonyms of Yorkshire fog include velvet grass.

Yorkshire fog (noun)	Holcus lanatus (noun)
tall European perennial grass having a velvety stem; naturalized in United States and used for forage	tall European perennial grass having a velvety stem; naturalized in United States and used for forage