a feeling, sensation / an impression / an atmosphere

broad, vast, boundless, wide

openness, not being closed / openness, allowing free entry and exit / openness, frankness

open a door etc. / open, allow freedom of entry and exit / be open and frank

mind, heart, spirit, soul; thoughts, ideas / attention, mind, interest / heart, feelings, emotion, emotional state / wholeheartedness, sincerity, true heart

a sea, an ocean / a lake / (figuratively) an object covering over a large area, as in 血の海 (chi no umi, “pool of blood”) or 火の海 (hi no umi, “sea of fire”)

to spread, to extend

to see, to watch, to observe, to look at something / to look over, to examine, to judge / to take care of, to look after, to keep an eye on somebody

disgraceful, shameful, indecent / shabby, unsightly

in a flash, in an instant