I wonder to what extent intra-language selection of synesthetic words occur along these lines when there are competing synonyms/alleles. Onomatopoetic words cou

I wonder to what extent intra-language selection of synesthetic words occur along these lines when there are competing synonyms/alleles. Onomatopoetic words could be favored for instance, but also words that in written form look like the thing they're describing, e.g. (from the top of my head): "bomb", "locomotive", "ghost", "teeth" etc.