一日増しに[ichinichimashini] day by day
加増[kazou] increase
割り増し金[warimashikin] premium
急増[kyuuzou] rapid increase
増して[mashite] still more

激増[gekizou] sudden increase
建て増す[tatemasu] to extend (building)
水増し[mizumashi] dilution
漸増[zenzou] gradual increase
増す[masu] to increase

益金[ekikin] profit
益虫[ekichuu] useful insect
益鳥[ekichou] beneficial bird
益友[ekiyuu] good friend
過剰利益[kajourieki] excess profit

共益[kyoueki] common profit
共益費[kyouekihi] monthly fee for common areas of an apartment building (lighting, etc.)
権益[keneki] (one's) interests
公益[koueki] public
公益事業[kouekijigyou] public utilities