Tammy and Joe 2ND Collaborative post-define word-concordant

According to The Non-Designer's Design Book "A concordant relationship occurs when you use only one type family with out much variety on style, size, weight, and so on." This refers to the type that is used for your project. "Most concordant designs tend to rather calm and formal" This would be of good use with wedding invitations or something else that is formal. Newspaper articles seem to be concordant also.