Affricate and Speech sound

Affricate noun - A composite speech sound consisting of a stop and a fricative articulated at the same point (as `ch' in `chair' and `j' in `joy').

Speech sound and affricate are semantically related In some cases you can replace phrase "Speech sound" with "Affricate", this terms are similar.

Speech sound noun - (phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language.

Affricate and speech sound are semantically related in sound unit of speech topic. You can use "Affricate" instead a noun phrase "Speech sound".