noun a unit of time that is approximately 30 days
verb none
adjective none
adverb none
pronoun none
preposition none
conjunction none
interjection none
article none
verb a verb shows an action or a state of being, in this case 'scheduled' is the past tense of the verb 'schedule'
adjective an adjective describes or modifies a noun or pronoun, in this case 'scheduled' describes a noun or pronoun
noun a period of three months, especially as a division of the duration of pregnancy