There is no word that can consist of 7 consonants and only have 3 letters. Consonants are letters.
sultana
snowday
Yes, protozoan is the only word you can make with those letters.
Strength is the only English word you can spell with those letters.
The only word I can think of for "joker", 3-letters, is imp.
The only English word you can make with those letters is oe.
Bree
Using only the first letters of a word to form a new word or phrase is called an acronym.
No. The word "alphabet" only refers to the group of letters; it does not refer to the individual letters themselves. There seems to be a tendency for people from India to misuse the word "alphabet" in place of the word "letter."
There are three 7-letter words possible:roosterrooterstoreros
The only acceptable Scrabble word which can be made from the letters bnossu is bosuns.