Sí, al oido de un angloparlante, "knot" y "knob" suenan totalmente diferente. Escuchamos la diferencia fácilmente. La diferencia es solo el consonante final, el "n" y el vocal "o" son iguales. Desafortunadamente, el deletreo de inglés es totalmente loco. No son ninguna reglas fiables, ninguna. Es lo que es. Es por costumbre o tradición. Nuestros maestros nos enseñan para leer usando un mezcla de métodos. Uno es "sight reading," y la idea es aprender una palabra como una unidad, pronunciación y deletreo, sin dando cuenta de las letras separadas. ¡Y en los EE.UU. tienen gran concursos, "spelling bees," competiciones nacionales, para niños demostrar sus dominando de el deletreo de palabras ingleses! Examples: https://vocaroo.com/gEDGB6tK31D Naturally: knot knob knot knob knot knob knot knob knot knob With exaggeration: knot knob knot knob knot knob Examples: I tied the rope in a knot. I turned the knob on the radio. I tied the rope in a knot. I turned the knob on the radio. -------- Yes, to the ear of an English speaker "knot" and "knob" sound totally different. We hear the difference easily. The only difference is in the sound of the final consonant. Unfortunately, English spelling is crazy. There are no reliable rules, none. It is what it is. Our teachers teach us to read with a mixture of methods. One of them is "sight reading," in which we learn words as units, pronunciation and spelling, without regard to the separate letters. And in the US we have national contests, called "spelling bees," in which school-age children compete to show how well they can spell difficult words.