The difference between Geezer and Wide boy

Geezer as a noun (informal, chiefly, British, dated in US):

A male person.

Geezer as a noun (UK, chiefly, Cockney, slang):

Someone affable but morally dubious; a wide boy.

Geezer as a noun (UK, slang):

Informal address to a male.

Geezer as a noun (informal, chiefly, US, sometimes, mildly, derogatory):

An old person, usually a male, typically a cranky old man.

Geezer as a noun (British):

A device for boiling water for such domestic uses as heating or washing; a boiler. The normal spelling is water .

Geezer as a noun (archaic, British, slang):

Wife; old woman.

Wide boy as a noun (British):

A man who lives by his wits, wheeling and dealing.