What does the addition of the suffix -ical do to a noun?

If someone wants to funds to you stick around it means they’re going to give you money

Read this excerpt from tim o’brien‘s “ambush” “i had already pulled the pin on a grenade. i had come to a crouch” which literary device is most clearly shown in this excerpt?

What does manns conclusion in "coming of age in the dawnland" indicate about how the settlements and people of sixteenth-century new england reacted to the increasing presence of europeans?