Wortsatz ausbauen?

By reading texts that contain many high-language words. For example, I suggest all the words that are unclear to me, for example that my teacher uses, for example, prosper, diffuse, subsume, cumulate, correlate, discredit, adequate, eloquent, desavouate, etc.
Furthermore, MÃ1⁄4hlah has a wide range of knowledge or general knowledge that allows him to compare in many ways: e.g. actors, films, currents, politics, art, earth science (e.g. stalagmites in Angeberprollrap Delux), fitness

For example, you can find suitable texts on Wikipedia, there are often good vocabularies or bpb.de