Yes, there are:
it is not a greek root or any root
Any word that has the root opto- like optometry etc. Not to be confused with the root ophthalmo- meaning eye.
a Dino called: Yangchuanosaurus.
Actually it doesn't have any root words, because it is a main word.
The root word for "phobe" is "phobia." It comes from the Greek word "phobos," which means fear or aversion.
No. There is no 'W' in greek.
There isn't any count of Greek words borrowed into Norwegian, but Greek words do not play a prominent role in the language.
Magnitude
The two words are unrelated in any language, not just English. Sporadic derives from the Greek root meaning "scattered" ( cf. diaspora ), while inspiration comes from the Latin root meaning "breath."
misogynist and misogamist
There are a few one-letter words in Greek, including η and ο, but Hebrew has no one-letter words.
Any online dictionary such as American Heritage Dictionary has the root and stem words on them. All dictionaries have the root words shown. Look up the word dictionary and you will discover the root word.