Parts (5)
'parts' is the definition.
(parts in a play)
This is the entire clue.
(Other definitions for roles that I've seen before include "Theatrical parts" , "Parts in plays" , "Parts in a play" , "Dramatic parts" , "Actors' parts" .)
'parts' is the definition.
(unit is a kind of part)
This is all the clue.
(Other definitions for units that I've seen before include "Single parts of a whole" , "Single things" , "Individual things, like pieces of furniture" , "military teams" , "Detachments" .)
'parts' is the definition.
(segment is a kind of part)
This is all the clue.
(Other definitions for segments that I've seen before include "Portions or divisions, as of grapefruit" , "Parts or pieces that fit with others" , "Nets gems in separate parts" , "Divides or splits up" , "Parts, pieces, portions" .)