What signs should I look for to know if i'm an introvert or extrovert?

Introverts often think there is something the matter with them and think they don’t fit in is because they compare themselves to extroverts who are a different species. 

 Introverts don’t like to talk, shy, prefer to be alone, don’t like to go out in public.

peoples who r introvert talks less they likes to live in silent region,and main point is they r mostly lonely guies, and exactly opposite of that extrovert are behaves,they cant hide there emotions,sorrow ,always talks about that to relatives ,or close ones...they directly express there problems to close ones and not store in mind ,speak out to others