TLDR:
- Sex is both an activity, and the parts involved in that activity.
- Gender is more about who's (or is implied to be) the pitcher and who's the catcher.
- A few tags and wiki pages should be updated so that we can all use precise and clear language to tag and to talk about tags.
If someone looks up gender (define:gender) they should clearly understand that the concept of gender is not one of biological form (sex), but of a type of role in society traditionally associated with a biological form (sex). That relationship is often used when trying to discuss topic of biology among 'polite' company by using the term 'gender' to reference the sexes which most commonly fit in to that social role.
On e621 'gender' should be traits unrelated to biological parts. Things like clothing, penetrated vs penetrating, and possibly activities with widely recognizable connotations of implying one role or another within a social context.
'sex' has three definitions (define:sex) of interest for this discussion:
noun 1: The activity of 'reproduction'. Officially it's only actually sex if you're trying to reproduce; not if you're just having fun.
noun 2: "either of the two main categories (male and female) into which humans and many other living things are divided on the basis of their reproductive functions."
Sex is based on the reproductive functions of a subject's biology.
verb 1: "determine the sex of "sexing chickens" "
However, many of the tags on e621 do not recognize the precision of this verbiage and incorrectly use gender where they should use sex (both in name and in discussing body-parts).
- https://e621.net/wiki/show/howto:tag_genders
- https://e621.net/wiki/show/tag_group:genders
- https://e621.net/wiki/show/ambiguous_gender
- https://e621.net/wiki/show/gender_transformation
- https://e621.net/post/index?tags=gender%3Aintersex (Tag search shows 1 post but it might be admin only as it shows null set for me)
- https://e621.net/wiki/show/crossdressing (Only in the first sentence)
These appear to be using the terms sex and gender correctly:
This should redirect instead to a page educating the user on the difference between gender and sex, as well as describing the policy on such tagging. (There should only be one such page, so that different sets of rules don't get out of sync.)
Updated by TheSirius