(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, =

(informal) equals, is equal to, is equivalent to, entails

education

a pond (small lake or pool) / a pool (small amount of liquid in a surface) / (calligraphy) part of an inkstone where water is stored

平行四辺形, 平行4辺形: a parallelogram