The greek word for one is: "ένα" (ena).
Sailor is an English word, not a Greek one. So it has no meaning in Greek. So perhaps you should ask, "What is the Greek word for sailor?"
I'm not sure about few, but one is mono. This word does come from the Greek.
The word "hermit" comes from the Greek word "ερημιτης" or "herimitis" which means one who lives a solitary life.
The Greek root word of "thespian" is Thespis, an ancient Greek poet who is believed to have created Greek tragedy.
one word for it is odynia
Mechanic is a greek word and it comes from the word "μηχανή", which has many meanings. One of them, the most common in modern greek, is "engine".
Pandora
christ
Melanie.
Xechasate
There is no single word for that.
The Greek root word 'hede' means: base, seat - as one would see in the word, catHEDral.