I often come here for traditional werewolf art which frequently contains blood and gore so it is marked explicit. But even blacklisting sex, penis, pussy, etc still returns a lot of sexually explicit stuff due to improper tagging and e621 being primarily a porn site. Is there a simple way to distinguish between the two, or is there another image board around for what I'm looking for?

werewolf -sex -masturbation -genitals -sex_toy ~blood ~gore rating:e ought to get you closer to what you want to find, if you happen to find mistags or a lack of tags you can either fix/add the tags or see if you can add other tags to your search. -tags serves to remove tags from your search, thereby preventing you from getting posts tagged 'em, while ~tags act as "and/or", causing searches to try to find any combination of them. in this search, you're guaranteed werewolf and all posts rated explicit, then excluded the sex, masturbation, genitals, and sex toy tags, and posts at least tagged blood or gore, or both.

It would be really cool to have different tags for explicit (sexual) and explicit (gore).

There are some sexual gore-related tags like snuff you could add to the blacklist.

You can add ~ in searches as "or". It might help when looking for explicit content that is specifically a type of gore
-> ~werewolf ~domestic_cat returns every post with a werewolf OR cat.

You might also want to blacklist *_fetish tags like fart_fetish, foot_fetish, etc… if you haven’t already.
-> werewolf -*_fetish returns every werewolf post without a fetish tag.

Your search could look like the following:
-> werewolf ~blood ~gore -*_fetish -snuff -penetration -sex_toy -bdsm -sex -genitals

dimoretpinel said:
It would be really cool to have different tags for explicit (sexual) and explicit (gore).

There are some sexual gore-related tags like snuff you could add to the blacklist.

You can add ~ in searches as "or". It might help when looking for explicit content that is specifically a type of gore
-> ~werewolf ~domestic_cat returns every post with a werewolf OR cat.

You might also want to blacklist *_fetish tags like fart_fetish, foot_fetish, etc… if you haven’t already.
-> werewolf -*_fetish returns every werewolf post without a fetish tag.

Your search could look like the following:
-> werewolf ~blood ~gore -*_fetish -snuff -penetration -sex_toy -bdsm -sex -genitals

There kind of already are?
There's only so many terms often blacklisted, like gore and feces and young sex for example.