For most of the United States, the morning or afternoon break is not often referred to as tea as the beverage has not traditionally been a widespread choice with Americans. The term "coffee break" is used instead to denote a morning social gathering for a snack and short downtime where hot and cold beverages, cakes, donuts, etc are consumed.
The term "high tea" is also used in the US to to refer to afternoon tea or the "tea party" which is a very formal, ritualised gathering in which tea, thin sandwiches and little cakes are served on our best china.
This usage is an analogical construction, the term "high" being associated with social "formality" (rather than a "high," or main, table). This form of tea is increasingly served in high-end American hotels, often during the Christmas holidays and other tourist seasons, and a rising number of big-city teahouses, where it is usually correctly described as "afternoon tea."
The tea party is still occasionally given in the U.S., either for a special occasion such as graduation, baby shower, or in honor of a visiting guest.