Homographs are words that are spelled the same regardless of pronunciation (they may be pronounced the same or differently). Homonyms are words that are both spelled and pronounced the same. Therefore a homonym is both a type of homograph and a type of homophone. To be correct I believe the Venn diagram should have one circle labeled homograph and the other labeled homophone. The intersection should be labeled homonym.
An Excessive Heat Warning is issued when heat indices are expected to reach at least 105 degrees, except at least 110 degrees over Delmarva and far southern New Jersey (Salem, Cumberland, Cape May, and Atlantic Counties).
At the time, however, the highest heat index that researchers were capable of imagining was 136 degreesâwhich is an air temperature of 110 degrees and a dew point of 80. Iran beat the chart by a wide margin, with air temperatures 115 degrees and a dew point of 90. The heat index is not an official statistic tracked by governments, so international records are hard to confirm. In the U.S., however, the highest heat index Wiltgen has ever seen is 144 degrees in Sheldon, Iowa, on July 29, 1999.