A speaker using complex terms is an example of

A speaker using complex, hard to grasp terms creates semantic noise, interference at the level of meaning.

Semantic noise occurs when the words themselves are not mutually understood, often through jargon or avoidable technical language.

Physiological noise is internal bodily distraction like hunger or fatigue, not a problem of wording.

Psychological noise comes from the receiver's inner states such as bias, worry or emotion.

Physical noise is external environmental sound in the surroundings.

Here the difficulty lies in the shared understanding of vocabulary, which is semantic.