play, amuse oneself, enjoy oneself / spend one's time idle, do nothing / for an item not to be in use, be spare or idle

従兄弟: a male cousin / 従姉妹: a female cousin / 従兄妹: an older male cousin and younger female cousin / 従姉弟: an older female cousin and younger male cousin

a cousin

second cousin (grandnephew or grandniece of a grandparent)

together, with

combined, merged, unified

combination; a state which is combined / meeting

park

a male cousin

first cousin once removed