Tree is and adjective
limber timber
No. Christmas is a proper noun. Its use with other nouns (Christmas dinner, Christmas present, Christmas tree) is as a noun adjunct, not an adjective. The adjective meaning 'of or like Christmas' is Christmasy or Christmassy.
"Frightening" is an adjective, as it describes a noun, e.g. The ancient, gnarled tree made a frightening shape in the moonlight.
The word 'climbing' is the present participle, present tense of the verb to 'climb'. The present participle of the verb is also an adjective and a gerund, a verbal noun. Examples:Verb: I caught the cat climbing up the drapes.Adjective: We bought a trellis and some climbing vines.Noun: Climbing can be a dangerous if you don't have proper training.
in a palm tree
"pond" is a noun. An adjective describes a noun. the pond is shallow...shallow being the adjective and pond being the verb. Any "thing" is a noun.
Built is a past tense adjective, "the house is built." Build is a verb "please build me a house."
No. It is a noun.
Tree is neither an adjective nor an adverb. The word tree is a noun, a singular, common, concrete noun; a word for a large form of plant with a stem of wood; a word for a thing.
No. Christmas is a proper noun. Its use with other nouns (Christmas dinner, Christmas present, Christmas tree) is as a noun adjunct, not an adjective.
oak
the tree house is at the entrance in a cave in this tree with an iceical on it.
limber timber
it turns into a tree house!!
no
If you don't have a tree it will just be a house.
You could consider only tree a noun. Or apple as well, since it is used as a noun adjunct, not technically an adjective. You could also consider "apple tree" to be a compound noun.