The Spanish word 'cantor' meaning 'singer' comes directly from the Latin word 'cantor' with the same meaning. This Latin word was derived from 'cantare', meaning 'to sing'. This is a straightforward etymology where both the form and meaning have remained remarkably stable from Latin to modern Spanish.

Several common Spanish words share this Latin root, including 'cantar' (to sing), 'canto' (song), 'cantante' (singer), and 'canción' (song). All these words preserve the basic connection to singing and musical performance that was present in the Latin root.

In English, we have several related words that came through Latin, including 'chant', 'enchant', and 'cantata'. 'Chant' developed from the same Latin root 'cantare' but underwent sound changes typical of words that entered English through Old French. 'Enchant' literally meant 'to sing into' or 'cast a spell by singing', reflecting ancient beliefs about the magical power of songs. A 'cantata' is a musical piece that is sung, directly reflecting its Latin origins.