Eater vs Piscivore - What's the difference?

As nouns the difference between eater and piscivore

is that eater is agent noun of eat; one who eats while piscivore is a fish eater.

(en noun)

Agent noun of eat; one who eats.

An eating apple.

* 2004 , Laura Mason, Food Culture in Great Britain (page 94)

For the British market, apples are classed as early, mid-season, or late, and subdivided into eaters or cookers.

One who performs fellatio or cunnilingus.

* 2001 , Cool Sexy Guy, Story: Cheerleading Camp Group: alt.sex

The girls were having lots of fun rolling around on the bed, though Kacie was a much better fingerer and occasional eater.

* 1987 , Baird Jones, Sexual humor - Page 309

I'm a slow but fastidious eater

* 1997 , James White, The Best Sex of Your Life - Page 166

Ice cream tastes good to the eater, and has the added advantage of providing a little chill of excitement

* ant-eater * bean-eater * bee-eater * binge eater * crow eater * fire eater * lotus eater * man-eater * sin eater * smoke eater

(en noun)

A fish eater.

* pescatarian (of a person)