the original item

a rope ladder used to board or leave a boat or ship / an accommodation ladder for a boat or ship / a movable stairway for an airplane, such as mounted in the door or on a specialized truck

setting a field ablaze

Kyūjitai form of 謹厳: solemnness, graveness

local language; language spoken by the locals

external language

internal language

Shangri-La; utopia

the second dimension / (by extension, Internet slang) the 2D (i.e. anime, manga, video games, etc.) world; the fictional world

unhappy; despondent