This is the 726th most frequent Bulgarian word.
тодор
"Тодор" is a Bulgarian masculine given name, equivalent to "Theodore" in English.
Here, 'Тодор' is used as a proper noun referring to a person's name.
Тодор е мой приятел.
Todor is my friend.
In this sentence, 'Тодор' remains a proper noun indicating the person performing the action.
Книгата, която Тодор чете, е интересна.
The book that Todor is reading is interesting.
Here, 'Тодор' is part of a fixed expression referring to a saint.