Language Principles and Structures

What is a broad terms that refers to oral and written communication?

Suffixes and Prefixes are associated with which language principle?

Which stage of orthographic development is this? "Phonetic spelling mixed with conventional spelling"

Which language principle is concerned with meanings of words or phrases in a sentence?

What is the language principle associated with "The vocabulary of a language"?

The knowledge that allows us to to put words together to create sentences by following the rules of a language is what?