Easel and Reading desk

Easel noun - An upright tripod for displaying something (usually an artist's canvas).

Reading desk and easel are semantically related. In some cases you can replace phrase "Reading desk" with "Easel", this terms are similar.

Reading desk noun - Desk or stand with a slanted top used to hold a text at the proper height for a lecturer.

Easel and reading desk are semantically related. You can use "Easel" instead a noun phrase "Reading desk".