When language is produced, we should care only the competence?

Eagles to fly five forest the northern in part Paris, from this sentence it is correct by the meaning of competence?

The limitation of lexical, knowledge might be the obstacle of language priduces.

When humans produce language correctly by grammatical structure, communicate confidently and appropriate for a specific class of people, it means that they reach the stage of aquisiton

The branch of linguistics related to the human mind is psycholinguistic.

*Diachronic linguistics is the study of a language through different periods in history.

Phonetics is the study of the sounds of language. What do we call these sounds?

What is the study of language as it pertains to social classes, ethnic groups, and genders?

It is the study of language from a cognitive and developmental law.