All Social Skills use Charisma as (one of) its Related Stat.
Begging[]
Begging is the ability to ask others for money, food, and other goods. Making yourself seem helpless and pitiful increases your chance, but in the end it is all about convincing the other person you need just a small amount of what they have.
Deception[]
Deception is lying to someone, getting them to believe something that is not true for your benefit. Usually used for scams such as false advertising.
Impersonation[]
Required: Apprentice Disguise
Impersonation is how well you can make someone believe you are someone else. This is different than normal acting; while people who the act is fake, the goal of impersonation is to make them unaware you are yourself.
Interrogation[]
Required: Novice Intimidation
Interrogation is the ability to sit someone down and question them successfully. Usually used by detectives and authority, it can be used to find the truth or get a confession from a supposed criminal.
Intimidation[]
Intimidation is the ability to persuade through aggressive and assertive means. It is quicker than normal persuasion, but often will leave the intimidated with a less favorable view of you.
Leadership[]
Leadership if the ability to have people follow you and do as you say. When working as a group, being a leader means being able to match people's skills with certain tasks or using your charisma to convince them to.
Negotiation[]
Negotiation is the ability to come to a conclusion in a debate or argument without violence and with a compromise that is favored by both parties.
Observation[]
Related Stat(s): Intelligence
Observation is how well you are able to view your surroundings or catch lies from someone.
Persuasion[]
Sub-Skills: Seduction, Intimidation, Deception
Persuasion is the ability to make someone agree with you, do as you say or believe what you're speaking of.
Seduction[]
Seduction is the Sub-Skill of Persuasion that focuses on the sensual and emotional side of people. You use playful and teasing methods to get what you want.
Teaching[]
Requirement: "Average" Intelligence and Adept in skill you wish you teach
Teaching is the ability to pass on your knowledge