Parent reviews for Hanging With Friends

Will somebody please tell me why this game will not me play "morphed" or "rehome"? Those are perfectly fine words. If the game won't recognize perfectly valid common English words, then what good is it?

My eight year old daughter loves this app. She plays with her friends all the time. I'm trying to understand why the site rated it for 14 and up?? Maybe because, depending on who you are playing, the words can be hard to guess? Or maybe because it allows users to play strangers? I've just told my daughter that she is only allowed to play her friends. I also told her that I will frequently check the dialogue on the chat part. Neither of those "rules" have been a problem for us.