He came as an illegal alien and spent several years legalizing his status.
Some people believe in aliens. Alien is a noun so use it in a sentence as a person
"The first contact with the alien was disconcerting." "The ways of foreigners are alien to us."
The proper noun in the sentence "Naveen is a good boy" is the word "Naveen."
The noun "alien" is a singular, common, concrete noun, a word for a person. The word "alien" is also an adjective.
The noun in the sentence "The hamburger tastes good" is "hamburger." It is the subject of the sentence, referring to the food item that is being described.
The adjective is big, describing the noun eyes.
'Alienate' is the verb form of the noun 'alien'.
Today is a noun in that sentence.
No
Her suggestion was completely alien to me.
A good example for a sentence would be: "A bone in my back broke."
Examples of Adjective Noun patterns are: The football team is good. (Football is the Adjective in this sentence, but, it can also be a Noun.) <--- Example: The football was sticky. (Football is now a Noun in this sentence.) The green eyes scared me! (Green is the Adjective in this sentence, but, it can also be a Noun.) <--- Example: Green is my favorite color. (Green is now the Noun in this sentence.)