They’re all related!
Yes, providing a word wall is important, but if those words are placed haphazardly on the wall, you miss a great opportunity to show how those words go together. Print out arrows and show how those things RELATE to one another! For example, when teaching the scientific method, you teach that the steps go in a certain order and that you use certain aspects of your senses at certain times. When hanging your word wall, make sure to place those terms in the order in which students would use them and use arrows to show how a student may go back to modify their experiment! This concept can be applied to any set of terms for any unit.