Flat is the British word for apartment.
Contemporary, modern, fresh, novel, newfangled, current, recent
The general term for different words that mean the same thing is "synonyms". When the words also sound alike (as with the archaic "quire" and modern "choir"), they are considered variant spellings of the same word.
It is an obselte but modern means of communication
Endocytosis, a modern term for the process by which cells brings in material (such as nutrients) from outside by enclosing it in the cell membrane, is derived from the Greek words endon"within", cytos "receptacle" (used in modern scientific terminology to mean "cell") and the noun suffix -osis.
The meaning of the Latin root "card" translates to heart. Modern words that employ this root are cardio, cardigan, and cardinal.
Xerox doesn't mean anything in Greek or any other language. The process that is the basis of the modern photocopier is called "xerography." This is a modern term made from two Greek words that meand "dry writing." "Xero" means dry and "graphos" means writing.
Depends on what you mean by "modern".
Beyrouth is derived from two conjoint words which are: Bir Ut. Those words mean the Well of Ut in Arameic or Canaanity and are still comprehensible is the modern Lebanese dialect. Beirut was founded on a site rich with wells and water. So here you have it BirUt!
Modern
current. currentness is the noun form, I believe.
they are non
Modern means "new" or "in style" or "fashionable"