The word "obstacle" is a noun. In the context of grammar, a noun is a word that represents a person, place, thing, or idea. "Obstacle" fits this definition as it refers to something that blocks or hinders progress or movement.
adverb
what part of speech is beneath
i want to know what part of speech is camping
The part of speech is a adjective
Oppose is a verb.
part of speech
The part of speech for this particular word is a noun.
yes
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
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.
The part of speech for "lecturer" is a noun.
The part of speech for "indefinite" is an adjective.