cryophobia vs simple phobia

cryophobia and simple phobia both are nouns.

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

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

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

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