Anyone know what those words call that depend on how you use it on a sentence, it can have a positive or negative feeling?

connotation?

http://dictionary.reference.com/browse/connotation

The words you're referring to are called "connotation." Connotation refers to the emotional or cultural associations that a word carries, beyond its literal meaning. The positive or negative connotation of a word can vary depending on how it is used within a sentence.

To determine the connotation of a word, you can consider the following steps:

1. Understand the literal meaning: Start by understanding the word's dictionary definition. This will give you a baseline understanding of its neutral or objective meaning.

2. Consider context: Analyze how the word is used within a specific sentence or passage. Words can gain positive or negative connotations based on the surrounding words, tone, or subject matter.

3. Identify emotional associations: Reflect on the emotional response that the word evokes. Does it have positive, negative, or neutral associations? Consider any historical or cultural factors that might influence the word's connotation.

4. Seek multiple perspectives: Connotations can be subjective, so it can be helpful to gather different opinions or interpretations from diverse sources. This will provide a broader understanding of how the word is perceived.

By following these steps, you can gain a better understanding of how words can have positive or negative connotations depending on their usage in a sentence.