A book I have found great for the children’s writer is, Children’s Writer’s Word Book by Alijandra Mogilner.
There is an alphabetical list of words that indicate the grade level for that particular word. For example, if you’re writing for third graders and question if they will know the word you are using, this book can help you know if it is the right word or if you need to change it,
A thesaurus is also included just in case you feel a particular word is not just right.
This tool will make your job easier and guarantee you are not rejected because you have not used appropriate words for the age group for which you write.
Striving to use the right words, Gloria