dinoflagellate vs mastigophoran

dinoflagellate and mastigophoran both are nouns.

Word	Noun	Adjective	Verb	Adverb
dinoflagellate	Yes	No	No	No
mastigophoran	Yes	No	No	No

As nouns, mastigophoran is a hypernym of dinoflagellate; that is, mastigophoran is a word with a broader meaning than dinoflagellate:

dinoflagellate: chiefly marine protozoa having two flagella; a chief constituent of plankton
mastigophoran: a usually nonphotosynthetic free-living protozoan with whiplike appendages; some are pathogens of humans and other animals

Other hypernyms of dinoflagellate include flagellate, flagellate protozoan, flagellated protozoan, mastigophore.

dinoflagellate (noun)	mastigophoran (noun)
chiefly marine protozoa having two flagella; a chief constituent of plankton	a usually nonphotosynthetic free-living protozoan with whiplike appendages; some are pathogens of humans and other animals