"-ical" isn't any part of speech. It's a suffix (noun) added to a word to create an adjective.
adverb
what part of speech is work
The suffix -ical means the relation of. An example of this is categorical.
i want to know what part of speech is camping
what part of speech is beneath
The suffix -ical means "related to" or "of, pertaining to." It is often used to form adjectives from nouns, indicating a characteristic or quality.
part of speech
The part of speech for this particular word is a noun.
adverb
what part of speech is work
what part of speech is beneath
ical oil
Volts
Some words that end in "ical" include: logical, practical, medical, critical, and musical.
Sashay is a verb. It means to walk in an exaggerated, showy manner, often with hip swaying.
"Did not" or "didn't" is a contraction of the auxiliary verb "did" and the adverb "not," forming a negative past tense construction in English.
Adjective