Chytridiomycetes vs Chytridiales

Chytridiomycetes and Chytridiales both are nouns.

Word	Noun	Adjective	Verb	Adverb
Chytridiomycetes	Yes	No	No	No
Chytridiales	Yes	No	No	No

Chytridiomycetes (noun)	Chytridiales (noun)
a class of mostly aquatic fungi; saprophytic or parasitic on algae or fungi or plants	simple aquatic fungi mostly saprophytic but some parasitic on higher plants or animals or fresh water fungi; sometimes placed in class Oomycetes