Yard is a noun.
The phrase "royal yard" is a noun. The plural is royal yards.
"Wildly" is an adverb . . . it modifies a verb (action word). "He was running around the yard wildly". 'Wildy' modifies the verb, 'running'.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
Yes, the yard is a part and yes, you can get charged.
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.