Absolutely (it is a type of fox).
No. Suq is not allowed in Scrabble.
No. Ni is not allowed in Scrabble.
No. That word is not allowed in Scrabble.
X-ray is a hyphenated word and is not legal in Scrabble.
No. The word honore is not allowed in Scrabble.
Acronyms are not allowed in Scrabble, but nairu is an allowable Scrabble word.
No. The word Zen is not allowed in Scrabble.
Yes. Zits is allowed as a Scrabble word.
No. Paux is a French word, which is not allowed in Scrabble.
No. Frey is not allowed in Scrabble.
No. Xa is not allowed in Scrabble.
No. Leint is not allowed in Scrabble.