Class and Refresher course

Class noun - One of the segments of society into which people are grouped.

Refresher course and class are semantically related. In some cases you can replace phrase "Refresher course" with "Class", this terms are similar.

Nearby Words: classify, classification, classical, classed, classmate

Refresher course noun - A course that reviews and updates a topic for those who have not kept abreast of developments.

Class and refresher course are semantically related. Sometimes you can use "Class" instead a noun phrase "Refresher course".