Why are these 8 words tricky?

Why are these 8 words tricky? 8 hard words to use correctly in English. From the web page to improve and practice your English ESL. KimGriffithsEnglish.com. IMG_5698

Here is my first article about tricky words.
Steal, Rob, Lend, Borrow, Forward, Foreword, Worthless, Priceless. Tricky = Difficult.