order Geraniales vs plant order

order Geraniales and plant order both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Geraniales	Yes	No	No	No
plant order	Yes	No	No	No

As nouns, plant order is a hypernym of order Geraniales; that is, plant order is a word with a broader meaning than order Geraniales:

order Geraniales: an order of plants of subclass Rosidae including geraniums and many other plants; see Euphorbiaceae, Geraniaceae, Rutaceae, Malpighiaceae, Simaroubaceae, Meliaceae, Zygophyllaceae, Tropaeolaceae
plant order: the order of plants

order Geraniales (noun)	plant order (noun)
an order of plants of subclass Rosidae including geraniums and many other plants; see Euphorbiaceae, Geraniaceae, Rutaceae, Malpighiaceae, Simaroubaceae, Meliaceae, Zygophyllaceae, Tropaeolaceae	the order of plants