The first thing is that I want to know what the following words mean: "gavroi", "vazeloi", "gyftoi", and "skoulikia."

The second is that I want someone to tell me about the use of the word "re." How informal is it? Is it just informal or is it insulting? My Yiayia describes it as a lower class word. Is that basically the opinion of the majority?

Thank you to everyone who helps me with this.