zoophobia vs simple phobia

zoophobia and simple phobia both are nouns.

Word	Noun	Adjective	Verb	Adverb
zoophobia	Yes	No	No	No
simple phobia	Yes	No	No	No

As nouns, simple phobia is a hypernym of zoophobia; that is, simple phobia is a word with a broader meaning than zoophobia:

zoophobia: a morbid fear of animals
simple phobia: any phobia (other than agoraphobia) associated with relatively simple well-defined stimuli

zoophobia (noun)	simple phobia (noun)
a morbid fear of animals	any phobia (other than agoraphobia) associated with relatively simple well-defined stimuli