Answer:
A portion of a word that forms the base of a word is its Baseword
Is it? I would have said it was Polonius's death
Large is an Adjective
Fish is a Noun
Swim is a Verb
Swiftly is an Adverb
In is a preposition
The is a determiner
Sea is a noun.
I hope this helps since you didn't say which word is italicized.
That's a very opinionated question and i'll try to give the best answer i can.
My opinion is that it's a little bit of both. Stories or movies that have fantastic or unreal parts can add depth, meaning and imagination. On the other hand, if someone is looking for something straight forward and real, the fantasy aspect can become a drag to the story and a distraction.
I hope this helps, but it is very opinionated <span />