(idiomatic) four treasures of the study: the brush, ink, paper and inkstone used in Chinese and other East Asian calligraphic traditions

(mahjong) Nine Gates; a winning hand with tiles in the form of 1112345678999 and any one tile of the same suit without melding

pond, lake, moat / object used for storage

culture, cultural progress / fragrance, perfume

(archaic) thunder / (obsolete) something ferocious and imposing, a demon or devil

a lucky day, auspicious day

flower arrangement, ikebana / the discipline of flower arrangement, as something to be studied and practiced

opinion / advice, a suggestion

equal, equivalent, the same

the equals sign, =