impinging,
striking,
contact close interaction; "they kept in daily contact"; "they claimed that they had been in contact with extraterrestrial beings"
engagement -
employment for performers or performing groups that lasts for a limited period of time; "the play had bookings throughout the summer"
employment,
work the occupation for which you are paid; "he is looking for employment"; "a lot of people are out of work"
engagement -
a hostile meeting of opposing military forces in the course of a war; "Grant won a decisive victory in the battle of Chickamauga"; "he lost his romantic ideas about war when he got into a real engagement"
engagement -
The point at which the fencers are close enough to join blades, or to make an effective attack during an encounter.
Wikipedia
An engagement is a promise to marry, and also the period of time between proposal and marriage – which may be lengthy or trivial. During this period, a couple is said to be affianced, betrothed, engaged to be married, or simply engaged. Future brides and bridegrooms are often referred to as fiancées or fiancés respectively (from the French word fiancé).