Making Sense of Word Associations

Some words are onomatopoeic. They sound like what they mean: crush, pop, sniffle, click, to name a few. Is there a category for words that look like what they mean? Words like Belly, Round, or Orb? And what about words that both look like what they mean and whose rhythm—or something else—further enhances their meaning? Taurus—the bull—is one of these. The T sports bull horns, at least in some fonts. Yet "Taurus" goes even beyond that, at least in my head, and I don’t know if I can explain it. It’s overarching and dominant. It’s the subconscious mascot of a Raider’s fan, a stoic Mexicaucasian male who wears dark baggy colors. And strangely, there’s something father-ready about the Taurus. Could it be because there’s a T in Testosterone? Perhaps much of it is just based on my own associations from my life experience, and therefore it isn’t shared by anyone else. Either way, these associations are certainly there, and this is my attempt to figure out why.