This PowerPoint explains the difference between the use of the words "high" and "tall", then provides some practice. It also mentions the colloquial use of the term "high" to mean "intoxicated". The PPT may be used alone or in conjunction with a worksheet of the same name which was designed to accompany it. Both were developed with intermediate or high-intermediate English learners in mind, but may also be used as review material for more advanced learners.