Thread:User talk:CodeCat/cum Latin/reply

The sources I have derive it from Indo-European ḱo(m) and relate it to Old Irish con- and Germanic ga-. There are a lot of PIE forms we haven't added yet so that really isn't an indication for anything. The fact that there are two parts of speech doesn't matter either as the two have the same meaning so they are obviously related. I can't explain the Old Latin forms though. Maybe you are right and these are distinct words, but what evidence is there for that apart from Old Latin? To reconstruct a PIE term it would need to be attested in several branches.