In the sentence below, are the verbs "to break" and "to enter in" synonyms?
Issue #7 breaks new ground that was untouched by the video game.
The verb "enter" is more broadly used as a "transitive verb" that doesn't require a preposition.
an activity or subject that people do not know anything about or have not experienced before: 'Genetic engineers are entering uncharted territory
[Macmillan Online Dictionary] '.