A blend is a particular sort of compound that has become popular over the past 150 years, created by joining the front part of one word to the end of another word—for instance, motor and hotel blended together to make motel.
Blending was a popular way of making humorous words in the second half of the 19th century. At that time they were usually called portmanteau words. In the 20th century, blending is an important method of adding new words to the English language.
Below is a comprehensive list of blended words from OALD and Lexico.