全 all

All kings do ZEN meditation under a peaked temple roof.

all of it ★★★★★
全 (all) + 部 (section) = 全部 (all of it)

absolutely! ★★★★☆ 1/2 KANA
全 (all) + 然 (nature) = 全然 (absolutely! )

absolutely! (usually used to emphasize the word after it. But sometimes, the word being emphasized is omitted because it's so obvious (to Japanese))

If you hear someone say 'Zenzen!' with no word after it, it might mean 'zenzen daijoubu,' ('Absolutely no problemo.') . . .

OR it might mean 'zen zen dame!' ('No effing way, guy!')

all members ★★★★☆
全 (all) + 員 (clerk) = 全員 (all members)

all the members of the group

nationwide ★★☆☆☆
全 (all) + 国 (country) = 全国 (nationwide)

nationwide,national (as in a national contest)