strong girl = starkes Mädchen
The term for "girl cousin" in German is "Kusine" if the cousin is female.
woman - Frau lady - Dame girl - Mädchen
Girl is "Mädchen" in German
"Stark" means "strong."
Du bist das Mädchen (girl) / die Frau (woman) meiner Träume. Be careful, adult german women often prefer it be called Frau, the term Mädchen has a touch of greenness. Besides, mind the articles!
Depends how strong you think strong is, strong is just an opinion.
For "nerd" the German language has a lot of designations:"Streber" if it's a boy, and "Streberin" if it's a girl,or"Außenseiter" for a boy, "Außenseiterin" for a girl.Also the term "Langweiler" or "Langweilerin" is appropriate
It depends on the context, but you could say: das baby das Kleinkind Das Bübchen Der Bube
The German word Schweinhund is a quite strong term of abuse and means utter swine, skunk. Quite Literally it means pig dog.
StarkKräftigKraftvoll
Stark
"Stark"