Trans woman
Some trans women who feel that their gender change is done, meaning that they have all the same physical characteristics of women who were assigned female at birth, want to just be called "women". They think that the names "transwoman" or "male-to-female" should only be used for people who have not finished their change. Some others do not feel that their gender ever changed and that they were always girls who were forced to live as boys. Because of this many see it as important to include a space in the name, as in "trans woman", using "trans" as a word to talk about a particular type of woman, not a "third gender" as "transwoman" might imply.