The spell-check of most word processing software programs would not catch a slip-up among these three words. As long as it’s a word and it is spelled correctly, spell-check keeps on scanning the document.
Invade is a verb. It means to attack a city or other area, typically by military force.
Evade is a verb. It means to avoid capture, to remain just out of grasp when being pursued.
The following sentence uses both words correctly:
The Xasxassian’s invade the Yowzaa’s land seeking a gilded goblet, but they didn’t realize that the Yowzaa’s stored their treasure in a vault in another land, so it would always evade enemy tribes.