Things that are disparate are clearly different from each other and belong to different groups or classes.
If you disparage someone or something, you say unpleasant words that show you have no respect for that person or thing.
Something nonpareil has no equal because it is much better than all others of its kind or type.
When there is a disparity between two things, they are not of equal status; therefore, they are different or unlike in some way.
When you compare two things, you are finding out how they are similar and how they are different.
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