constituent

constitutional in the structure of something (especially your physical makeup)

an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system

spare components for cars

a component or constituent element of a system

an abstract part of something

jealousy was a component of his character

two constituents of a musical composition are melody and harmony

(grammar) a word or phrase or clause forming part of a larger grammatical construction

a member of a constituency; a citizen who is represented in a government by officials for whom he or she votes

needs continued support by constituents to be re-elected

something determined in relation to something that includes it

he wanted to feel a part of something bigger than himself

I read a portion of the manuscript