By the way a female emperor simply means female emperor, but sometimes the word, female emperor can be understood as emperor of the female line since it has a similar meaning.
なお、上記の如く女性天皇とは単に女性の天皇を指す、個々の天皇の性別についての言葉であるが、語句の類似性から女系天皇と混同されることが多い。