原茸: meadow mushroom (Agaricus campestris)

yeah, sure (interjection of understanding and mild dismissal)

to strike the shoulder to relieve pain / (figuratively) to give a gentle suggestion to resign from one's job

山岳: mountain

or rather / (informal) Used to change the topic and introduce one's realization that something is strange.

Alternative form of 張り倒す

paint / decorate

羽, 羽根, 羽子, 翅: feather, wing; blade (of a propeller); shuttlecock

(Classical Japanese) universal, wide

stem or continuative form of すむ (sumu) [godan]