Thinking out loud:

c) A curved Malaysian knife.
He carved a beautiful male figure using an old nisgul given to him by his great grandfather.

j) type of stitch used in Shetland needlework

The nisgul stitch makes a tight weave for this kind of yarn.

l) Distastefully bland (This one made me laugh!)
I had the most NOT nisgul meal this evening!

They are all really good but gonna go with C