The word 'connotation' has two distinct senses: 1: what you must know in order to determine the reference of an expression; 2: an idea that is implied or suggested
Language Connotation is the tone or emotional association that a word has. It can be negative or positive, but is usually something seen by the population in general. For example, "slim" and "bony"...
A connotation is your emotions to a word. For example, murder. When we think of murder, we think of it as a bad thing, so it has a negative connotaion.