junior

/ˈdʒuːnɪə/

noun

A younger person.
"four years his junior"
A name suffix used after a son's name when his father has the same name (abbreviations: Jnr., Jr., Jun.).
A third-year student at a high school or university.

adjective

Low in rank; having a subordinate role, job, or situation.
(often preceded by a possessive adjective or a possessive form of a noun) Younger.
Belonging to a younger person, or an earlier time of life.

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