Where are you getting this false information?
Catholics don't bow down to OR serve strange Gods.
So Catholics can play semantic games all they want by redefining words and holding to their version of the letter of the Law, but bowing is bowing.
Why do you change the words of scripture? Here, let me give you that again.
Thou shalt not make unto thee any graven image, or any likeness of any thing that is in heaven above, or that is in the earth beneath, or that is in the water under the earth: You shall not bow down to them or serve them,
Do you see anything in there that says "Gods"? I don't. Do Catholics make graven images? Yes they do. Do Catholics bow down to them? Yes they do.