The form that words take doesn’t have a direct relation to their meaning.
For example, the word “cat” doesn’t sound like a cat. The sound cats make is “meow” and they’re silent when they walk, whereas “cat” is a strong, snappy, short and loud word.
The sound keeps us from trying to decipher what the word “cat” means. This is because we’ve paired the word with the image through generations of rote learning.