Bloggers write their own content, they use words, they use sentences to communicate to their audience. That is why it is very important that bloggers use appropriate and accurate words in order for the readers to understand every word they read.

The perfect tool for that is a dictionary with thesaurus. I would personally recommend to use Google Dictionary. Google dictionary is very fast, they don't have unnecessary graphics that are slow to load, just plain minimalist website, which makes your searches lightning fast. They also have accurate thesaurus included on your searches. If you'd rather want computer installed, then use WordWeb. They have definition, thesaurus and even Wikipedia links included in every searches.

If you want your readers to understand you, then use the right and simple words.