What word starts with pen and is a kind of necklace?
The word is Pendant.
Yes, the noun 'pen' is a common noun; a general word for an instrument for writing or drawing with ink; a general word for any of various other pen-shaped devices (insulin pen or laser pen); a general word for a small enclosure for animals; a word for any pen of any kind. The word pen is also a verb: pen, pens, penning, penned.
No. The sentence in the question should be - Pass me the pen please - but there is no adjective in this sentence. Pass me the red pen please - red is an adjective. The is never an adjective it is always an article. There are three articles a/an/the. Articles come before nouns. Pass me the pen please. - because the is used in this sentence we assume the people talking know which pen…