IDK if there’s a similar function on Lemmy, but at least on tumblr it’s recommended to tag things in full (eg: a post about eating disorders should be tagged eating disorder instead of ED or funky eating or something dumb like that) so that way filtering is easier (though, people who don’t want to see ED content would likely filter both, it’s good for when there isn’t a specific euphemism everyone uses (there are so many terms people use for rape on the internet it isn’t even funny))