@Aelter you seem to be confused by the terminology as well. Tomgirl is not the same as Tomboy.
Tomgirl is meant to be an antonym of Tomboy, meaning a girly male (the opposite of a boyish female).
Femboy has roughly the same meaning as Tomgirl, meaning a feminine boy.
I downvoted this, I just want to explain: 'tomboy' means a girl or woman who have traits associated with boys, may include being into sports, having an attitude, wearing a ballcap, wearing jeans, not wearing makeup, mainly having guy friends, and/or being 'one of the boys'. Tomboys can look like girls, they can have long hair and they can have boobs. Tomboys and femboys are two different concepts.
Honestly, tomgirl is rarely used and not as widely understood as femboy is.
https://trends.google.com/explore?q=tomgirl%2Cfemboy&date=all&geo=Worldwide
So I get where this is coming from, but at the same time, we shouldn't create duplicate tags.
Would probably be better submitted as a rename suggestion with just one term.