Repetition & Refrain
Anadiplosis
Repeating the last word or phrase of one clause at the beginning of the next. The repetition links the ideas; it does not establish a logical connection between them.
"Fear leads to anger. Anger leads to hate. Hate leads to suffering." — Yoda
Don't confuse it with Epanalepsis. Gradatio is anadiplosis sustained up a ladder of intensity; epanalepsis circles back within a single clause.
Examples
We sought trust; trust required honesty.
“Trust” ends the first clause and begins the next.
The rest of the family
Anaphora Epistrophe Symploce Epanalepsis Gradatio / Climax Epizeuxis Diacope Conduplicatio Polyptoton