Those letters can be used to spell "narwhal".
Using all the letters you get: saguaro
Using all the letters you get: climant
There is no 7-letter word using these letters, but there are these two 6-letter words:adroitdiatom
You cannot make any words with seven letters using these letters. The longest word you can make is honda.
Yes, you can make the five-letter word "early" using the letters y, r, e, l, and a.
There is no nine letter word in English using those letters; you can make the eight letter words hotsauce and cathouse.
Special.
carmaker
Mobster.
ounce,
pikake
"BRIBEE"