Pair: two of something, usually that are similar or go together. For example:
Pear: a fruit. For example:
Pare: trim (something) by cutting away its outer edges; cut the skin off of something; reduce (something) in size, extent, quantity, or number, usually in a number of small successive stages. For example:
Now that you know the difference between these words see if this sentence makes sense to you:
To learn more about confusing words, read this post about word pairs.