Brassia lawrenceana vs orchid

Brassia lawrenceana and orchid both are nouns.

Word	Noun	Adjective	Verb	Adverb
Brassia lawrenceana	Yes	No	No	No
orchid	Yes	No	No	No

As nouns, orchid is a hypernym of Brassia lawrenceana; that is, orchid is a word with a broader meaning than Brassia lawrenceana:

Brassia lawrenceana: South American orchid with spiderlike pale-yellow to pale-green flowers
orchid: any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors

Other hypernyms of Brassia lawrenceana include orchidaceous plant.

Brassia lawrenceana (noun)	orchid (noun)
South American orchid with spiderlike pale-yellow to pale-green flowers	any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors