When you have a series of questions to ask, please put them in one post. Asking a whole string of similar questions just puts other people's queries further and further down the page and onto Page 2 where they may never be seen. Thank you.
I don't wish to appear pedantic ("Oh yes you do", they chorus!) but "square dance" "square meal" and "square root" are not 3 new words; they are 3 phrases that happen to have the word "square" in common.