It is etiquette
People Skills. Communication skills.
Unsocial, nonparticipating, aloof, antisocial, or standoffish. Those words mean lack of social skills.
another word for skills could be talents.
Anti-social
another word for social misfit is sociopath or a nonconformist
Caste is another word for social status. It means the system of dividing society into classes.
soft skillspeople skillsinterpersonal skills
social engagment
You could try abilities or skills.
Another word for sharpen is improve. Example: He took a class to sharpen his skills. He took a class to improve his skills. The two example sentences mean the same thing.
Another word for this could be social media, or you could describe the particular type of platform you are being social on by using that network's given monikers, such as "Facebooking" or "Tweeting" at someone, or "Instagramming" a photo.
The word that means to copy the actions of another is "imitate." It refers to the act of mimicking or replicating someone's behavior, style, or actions. This can occur in various contexts, such as art, performance, or social behavior. Imitation can be a way to learn or express admiration for someone else's skills or qualities.