meh semantics, way i see it both are fast, sharp, consecutive jumps in notes, pitch , tones etc. the "way" its done is dependent on the style of singing.

it can be found across a great number of genres from actual yodeling right the way through to through to rock, hip hop and R'n'B... and even religious prayer songs cross culturally... in which case we could argue that yodeling is a sacred artform of prayer, lol

so again i stand by my previous comment... it really depends on where you are standing on the music spectrum