A connotation is the feeling a word invokes. A denotation is what the word literally says.
Example: If these words were on a trip, connotation would be the baggage, and denotation would be the traveler.
A work cited page is needed in any research paper
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.
In some cases yes and some no
Sebastian Stan is a Romanian-American actor. Stan gained wide recognition for his role as Bucky Barnes / Winter Soldier in the Marvel Cinematic Universe, beginning with 2011's Captain America: The First Avenger.