Can a woman after puberty be called "Saghira" (صغيرة)?

Greetings to the site members! I wanted to ask about the word "saghira" (صغيرة). Does this word have any other meaning than "child", "little", "girl"? What is the approximate age range? Girl 15, 18, 20 years old can be called "saghira" in any cases? **Can a woman after puberty be called "saghira"?** Give your answer from the point of view of the Arabic language and Islam.