And that first link you provided says that what is translated "bow down" can also be translated "worship them or serve them", not just "bow down" -- see the top right of the page in your first link you provided, "http://biblehub.com/exodus/20-4.htm".
Also, please not that every single example from the Bible translations shown on your link adds words "or likeness" to "image" or to the word "idol" (or the equivalent), just like the King James Version says "image OR likeness", not just "image".
The word shown in your Hebrew reference link you provided there for "likeness" is "temunah" ( http://biblesuite.com/hebrew/temunah_8544.htm ), and is plainly shown in your reference there as meaning "likeness" -- NOT "idol" -- look again at your links.
(A "likeness" is a "likeness"...)
The true, official teaching of the Catholic Church is that we only worship God, no one or nothing else. Anyone who claims otherwise is simply not speaking the truth.
The Hebrew word for bow down and worship are the same.
God clearly sees bowing down as worshiping.
The chutzpah Catholics have to redefine what God has clearly told us is staggering.
Bowing down is bowing down. It can be objectively observed.