(collective) people, each person, everybody

happily

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

pleasant, delightful, fun, enjoyable

park

a forest-park, arboretum

national park

parkway

park that is designated by nation and maintained by prefecture (in Japan, 都(と)道(どう)府(ふ)県(けん) (todōfuken)) or other local government; quasi-national park

(chiefly in the negative) so much; so often; so long; particularly; especially