I hear people talk about “falsetto”? Is that different from “head voice”?
Falsetto happens when the vocal cords are coming apart and therefore the result is an “airy” sound. Falsetto gives you the feeling of resonance up in your head, which you also have in head voice. The main difference is that strong head voice does not sound airy and can connect smoothly down through the bridges to chest voice, while falsetto has no “bottom”, and does not connect to chest.