- 过期(guò qī): to be overdue; to exceed the time limit; to expire (as in expiration date)
- 期待(qī dài): to look forward to; to await; expectation
- 期间(qī jiān): period of time; time; time period; period; CL: 個|个(gè)
- 日期(rì qī): date (calendar); CL: 個|个(gè)
- 时期(shí qī): a period in time or history; period; time (interval); phase; CL: 個|个(gè)
*CL: Classifier/Measure Word