What could the word for a carpenter be?
There is a word, vardhaki which occurs in the Ra_ma_yan.a connoting a
carpenter. It is explained in the Sanskrit lexicon as related
to 'shearing, cutting'.
There are cognate substratum words in Munda, Gujarati and other
languages of Bha_rata.
http://www.hindunet.org/saraswati/mleccha/mleccha01.htm
This URL presents some lexemes in the context of the pictographic
script on many inscribed objects dated to ca. 3300 BCE. --= in
particular, barad.o, 'backbone' (Gujarati); baradh, 'bull'
(Punjabi); -varda in: bali_varda, Sanskrit (sometimes cited as a
borrowing from Austric); and bad.hoe, 'carpenter' (Santali).