release / liberation / emancipation

開放感: refreshing sense of space

a hostage / (archaic, original sense) indentureship, the state of being in servitude to another as collateral on or payment of a debt

liberation, absolution

refreshing sense of space

人質: hostage; prisoner

回帰: return, recur

会期: session (of a legislature or of a conference) / 会規: association's rules / 皆既: total eclipse / 回帰: return, recurrence

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

a tombstone; a gravestone