I'm really hard stuck trying to comprehend whether these two words simultaneously have two natures.
The door is open
The door is opened
The door is close
The door is closed
English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. It only takes a minute to sign up.Sign up to join this community
"The door is open" indicates that someone may go through. An adjective.
"The door is opened" This is better written as, "The door was opened." It means the door that was closed is closed no longer. A verb.
"The door is close" This means the door is nearby, and its status of opened or closed is not the aim of the phrase. An adverb.
"The door is closed" This indicates that the door needs to be opened to go through it. A verb.
Close (pronounced /kloz/, the same as clothes) and open are verbs, or at least can be used as verbs in many constructions. The word also spelled close but pronounced /klos/ is an adjective, often appearing with the preposition to. Open (same pronunciation as the verb) can also be an adjective.
Since they can be verbs, they can have past participles: closed and opened; these can also function as adjectives.
So, yes, they are verbs, and yes, they are adjectives.
And who ever told you they had to be one or the other?