fragrant orchid vs orchid

fragrant orchid and orchid both are nouns.

Word	Noun	Adjective	Verb	Adverb
fragrant orchid	Yes	No	No	No
orchid	Yes	No	No	No

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

fragrant orchid: European orchid having dense spikes of fragrant pink or lilac or red flowers with conspicuous spurs
orchid: any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors

Other hypernyms of fragrant orchid include orchidaceous plant.

fragrant orchid (noun)	orchid (noun)
European orchid having dense spikes of fragrant pink or lilac or red flowers with conspicuous spurs	any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors