The rules that determine how sounds and words can be combined used to communicate meaning within a language are collectively known as?

The rules that determine how sounds and words can be combined used to communicate meaning within a language are collectively known as grammar.

While grammar encompasses a broad range of rules, it specifically covers:

* Phonology: The study of sound systems and how sounds are combined.

* Morphology: The study of word formation and how words are structured.

* Syntax: The study of sentence structure and how words are combined to form phrases and sentences.

* Semantics: The study of meaning in language.

These aspects of grammar work together to ensure that language is organized and understandable, allowing for effective communication.