convocation

As nouns the difference between valedictory and convocation

is that valedictory is a speech given by a valedictorian at a graduation or commencement ceremony while convocation is the act of calling or assembling by summons.

As an adjective valedictory

is of, or pertaining to, a valedictorian.

As nouns the difference between invitation and convocation

is that invitation is the act of inviting; solicitation; the requesting of a person's company while convocation is the act of calling or assembling by summons.

As nouns the difference between convocation and convocationist

is that convocation is the act of calling or assembling by summons while convocationist is an advocate or defender of convocation.

As a noun convocation

is the act of calling or assembling by summons.

As an adjective convocational is

of or pertaining to a convocation.

As nouns the difference between convocation and prolocutor

is that convocation is the act of calling or assembling by summons while prolocutor is a spokesman (person who speaks on behalf of others).