What's in a Name?

Have you ever seen a book title and thought, "I've read that!" only to read the blurb and wind up scratching your head, now unsure? If you've not read reviews beforehand all you have to go on in picking a book is title, author, cover, blurb, and word of mouth. If any of those doesn't appeal, the book gets passed by. So here's my dilemma:

For my Diversion series, each book seemed to pick its own title based on the prevailing theme (the last three titles are still tentative):

Diversion
Collusion
Corruption
Manipulation
Redemption

Because Collusion and Corruption are so similar, would you, as a reader, confuse them?