Why are everyday dictionary words being used more & more for reasons?

The latest being, you type in fantasy wallpaper and out comes thousands of images of half naked women, when did that actually happen that the word FANTASY is entirely dedicated to showing ography rather than what the word means. another word is melons--sea men--and crutch down--this is becoming so annoying, must go check if ive got my preferences on the right setting. OH but yes it is.