The difference between Junior and Subordinate

When used as nouns, junior means a younger person, whereas subordinate means one who is subordinate.

When used as adjectives, junior means low in rank, whereas subordinate means placed in a lower class, rank, or position.

Subordinate is also verb with the meaning: to make subservient.

check bellow for the other definitions of Junior and Subordinate

Junior as an adjective (comparable):

Low in rank; having a subordinate role, job, or situation.
Junior as an adjective (not comparable, often, preceded by a [[possessive adjective]] or a [[possessive]] form of a noun):

Younger.
Junior as an adjective (not comparable):

Belonging to a younger person, or an earlier time of life.
Junior as an adjective (not comparable, chiefly, US):

Of or pertaining to a third academic year in a four-year high school (eleventh grade) or university.

Junior as a noun:

A younger person.

Examples:

"four years his junior'"
Junior as a noun:

A name suffix used after a son's name when his father has the same name (abbreviations: Jnr., Jr., Jun.).
Junior as a noun (chiefly, US):

A third-year student at a high school or university.

Subordinate as an adjective:

Placed in a lower class, rank, or position.
Subordinate as an adjective:

Submissive or inferior to, or controlled by, authority.
Subordinate as an adjective (grammar, of a clause, not comparable):

dependent on and either modifying or complementing the main clause

Examples:

"In the sentence “The barbecue finished before John arrived”, the subordinate clause “before John arrived” specifies the time of the main clause, “The barbecue finished”."
Subordinate as an adjective:

Descending in a regular series.

Subordinate as a verb (transitive):

To make subservient.
Subordinate as a verb (transitive):

To treat as of less value or importance.
Subordinate as a verb (transitive, finance):

To make of lower priority in order of payment in bankruptcy.