transition

nouns

the act of passing from one state or place to the next
is derived from
an event that results in a transformation
a change from one place or state or subject or stage to another
is a type of (narrower)
an event that occurs when something passes from one state or phase to another
"the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago"
a musical passage moving from one key to another
a passage that connects a topic to one that follows
is a type of (narrower)
a section of text; particularly a section of medium length

verbs

cause to convert or undergo a transition
"the company had to transition the old practices to modern technology"
is a type of (narrower)
change the nature, purpose, or function of something
"convert lead into gold"; "convert hotels into jails"; "convert slaves to laborers"
causes
make or undergo a transition (from one state or system to another)
"The airline transitioned to more fuel-efficient jets"; "The adagio transitioned into an allegro"
make or undergo a transition (from one state or system to another)
"The airline transitioned to more fuel-efficient jets"; "The adagio transitioned into an allegro"
is a type of (narrower)
lay aside, abandon, or leave for another
"switch to a different brand of beer"; "She switched psychiatrists"; "The car changed lanes"