Full Form of TBD: To Be Decided
Full Form of TBC: To Be Confirmed
Description: Use of TBD can be understood well by taking the example of a cricket/ sports series, where the teams that will go to the semifinals or finals are to be decided in the qualifiers or initial matches. Hence, while seeing the match schedule for Final/Semi-final matches, you may find TBD written against the team name as they are yet to be decided based on how they play(i.e. they win or lose)
However, TBC (To be confirmed) is used when the current data is not confirmed or not sure of.