My source in the Registrar's office - and the documentation for our registration system - refers to a groups of students registering at the same time as "cohorts" - In fact, the term is used a lot in the Faculty of Nursing where they group the students for not only classes but training sessions and in-hospital experience.
Concede implies reluctance or a change of mind. "I concede your point" means that I reluctantly accept it, or I go back on my previous opinion and now agree with you. Accept is more neutral; "I accept your point" would be valid if I originally agreed with it, and if I didn't.
Admit (in the context of "I admit your point is true") means to concede something as true, again it implies reluctance. Just in my opinion, it doesn't imply as much of a change of heart as concede does. Admit also has the meaning to confess, as in "I admit I ate all the blancmange, but it was a crime of passion".
Best Answer
They can both mean the same thing but "admitted" is usually paired with "to":
"Accepted" can work with many different prepositions but in this context the most appropriate would be:
The relevant word definitions, by the way: