From my point of view, it is the Spanish cause most things has at least two to three names. Such as bedroom: pieza, cuarto, habitacion. Depending of the country in witch it is spoken. And it is still the same language and not a dialect.
Anyone that knows a tiny bit of Spanish will know that the vocabulary is so big that even for a person native speaker with a master can read literature in Spanish that will sound to him exactly as a foreign language. Try anyone to read Martin Fierro. You will need just a master in this book to read and undestand it. Spanish also took vocabulary from English, Arabic and many other languages. Of course for a English native speaker with even some education this fact can pass blind through treir eyes.
All references I have seen say that English has by
far the largest vocabulary of any known language.
The second edition of the Oxford English
Dictionary, which attempted to include all English
words except some technical scientific ones, takes
up almost one whole shelf on my bookcase. There are 20 volumes of it, with a total weight of
about 140 pounds, and it contains over half a
million words. Currently the third edition is being
prepared and the forecast is that it may be so
large (perhaps a million words) that it will be
published only on disc to keep the price down and
keep from using up so much paper.
English has adopted words from so many languages that it has almost three separate
vocabularies. The main sources aside from Old
English itself have been Latin, Greek and French.
As an example take the English word head. Then
from Latin caput, capitis we get the word capital;
from the Greek kephalon comes English cephalic.
From the French tete we have English tete-a-tete;
all four words meaning head. You can do this sort
of thing with many English words, though often the
French and Latin words are the same or nearly so.
My step-mother was Mexican and she said that she knew all of the words in the spanish language. I thought the idea of knowing all of the words in a language was rediculous so I asked if she knew everyword in English (to see if she was just stupid or something), she said that she certainly did not. Does anybody know all of the words is the English language? I think there may be a few that come close. There are many more than three words for just about everything in English. To use your example bedroom: bedchamber, bunk room, chamber, cubicle, guest room. A bedroom could also be referred to as simply room (your room) or master (short for master bedroom).