One of the reasons why English is known for being difficult is because it’s full of contradictions. There are innumerable examples of conundrums such as:
There is no ham in hamburger.
Neither is there any apple nor pine in pineapple.
If teachers taught, why didn’t preachers praught?
If a vegetarian eats vegetables, what does a humanitarian eat?
“Overlook” and “oversee” have opposite meanings, while “look” and “see” mean the same thing.