class Heterokontae vs Chrysophyceae

class Heterokontae and Chrysophyceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Heterokontae	Yes	No	No	No
Chrysophyceae	Yes	No	No	No

As nouns, class Heterokontae and Chrysophyceae are synonyms defined as:

class Heterokontae and Chrysophyceae: all the yellow-green algae having flagella of unequal length

Other synonyms of class Heterokontae include class Chrysophyceae, Heterokontae.

class Heterokontae (noun)	Chrysophyceae (noun)
all the yellow-green algae having flagella of unequal length	all the yellow-green algae having flagella of unequal length