月曜日(げつようび) Monday ~月(がつ) [counter for calender month; 一月(いちがつ): January] ~ヶ月(かげつ) [counter for counting months]
お金(かね) money
半(なか)ば middle
週(しゅう) week 週間(しゅうかん) week; weekly 今週 (こんしゅう) this week 先週 (せんしゅう) last week 来週 (らいしゅう) next week 週末 (しゅうまつ) weekend
毎(まい) every... [prefix] 毎日(まいにち) every day 毎週(まいしゅう) every week 毎月(まいつき) every month 毎年(まいねん) every year
来年(らいねん) next year 去年(きょねん) last year