different between vampirist vs vampirish

English

vampire +? -ist

vampirist (plural vampirists)

A person with a mental disorder causing a craving for blood and behavior similar to that expected of a vampire.

From vampire +? -ish.

vampirish (comparative more vampirish, superlative most vampirish)

Pertaining to a vampire, characteristic of a vampire; photophobic, parasitic etc. [from 19th c.]
- 1994, Edward St Aubyn, Bad News, Picador 2006, p. 227:
  In London, when the pasty light of dawn had stained the ceiling above the curtain pole, he would listen with vampirish panic to the squealing and rumbling of distant juggernauts, and then to the nearby whining of a milkcart, and eventually to the slamming doors of cars bearing children to school, or real men to work in factories and banks.

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