This has been bugging me for almost a month now.
The reason why I am considering them the same word is because overzealous doesn't change the meaning of zeal in it, while Zealot does.
Is there a term for this example?
This has been bugging me for almost a month now.
The reason why I am considering them the same word is because overzealous doesn't change the meaning of zeal in it, while Zealot does.
Is there a term for this example?
It's not clear what your question means. There is no reasonable linguistic sense in which zealous (never mind overzealous) contains the "word" zeal. It just happens that our imperfect writing system uses the same sequence of letters to denote different sounds in this pair of related words. This happens often. Mouth (noun) and mouth (verb) sound different, but are spelt the same. Ditto live (verb) and live (adjective). Compare also pairs like insane and insanity - the letters of one word are not precisely contained in the second word, but the same thing is going on.