An Introduction to L ...

the trait of acting unpredictably away from reason or judgment

the act of moving something from its natural environment

being twofold; a classification into two opposed parts or subclasses

a set of infinite number of utterances used by human beings to communicate

is a branch of linguistics that studies the stock of words (lexicon) and word formation in a given language.

a means or instrumentality for storing or communicating information

It is the scientific study of morphemes, which are the smallest significant units of grammar. It is the branch of linguistics concerned with word formation. 

is the scientific study of the sounds of speech. It focuses on the production of sounds - how sounds are made, and on the reception of sounds - how the ear hears those sounds. 

makes use of phonetics in order to study how sounds are classified within the system of a particular language or languages.

the state of being first in importance