Bullying can largely be divided into 4 types of bullying, each working in a different way but in a very similar way.
Physical - This is probably the most obvious form of bullying, and the one that is most likely to get dealt with by the authority figures. This includes hitting, kicking, tripping, throwing things, stealing or destroying a persons possessions, etc.
Physical bullying is the most obvious and the one a lot of people will take the most serious.
Verbal - This is another form of bullying which can be just as damaging to a person emotionally. This includes things like name calling, insults, taunting, homophobic and racist comments, etc.
Verbal bullying is sometimes met with a “Sticks and stones…” sort of thinking, which at times may deter the behaviour, but verbal bullying can definitely cause serious damage to a persons mental and emotional well-being.
Social - Social bullying tends to effect older kids and adults more. This includes things such as gossiping, spreading rumors, leaving people out of group things intentionally and visibly, and otherwise attempting to hurt a persons social reputation and relationships.
Social bullying affects middle schools, high schools and work places. Social bullying can be very hard to deal with at times, and in some cases attempting to disprove or suppress things can lead to the opposite effect.
Because it attempts to draw from a herd mentality it can be very hard to deal with at times.
Cyber bullying - This is very closely related to social bullying, and could even be considered a extension of it. However the internet has allowed for anonymity, permanence and at a potential scale that doesn't occur in “real world” interactions. Posts online can spread and follow a person anywhere and practically indefinitely.