According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern --Y-K---. That is, eight letter words with 3rd letter Y and 5th letter K. In alphabetical order, they are:
kayakers
kayaking
unyoking
There isn't one.
yank
yolk
Kangaroos
WHIRLPOOL
thing?
Here is a list:aversionablationabderianassassinauroreanausonianavercornavulsionallusionaphelionAnglicanallergenalkarsinambrosin...and many more.
Scissors is an 8 letter word. It begins and ends with S.
furlough
furlough
cardboard
rottwieler
Fish Flush Flash Fortieth Faith
Cardboard, clipboard and chickweed are 9 letter words. They begin with C and ends with D.
One example is cod. (it is a type of fish)