Glassologist :: Glassologist (n.) One who defines and explains terms; one who is versed in glossology.
Lasso :: Lasso (n.) A rope or long thong of leather with, a running noose, used for catching horses, cattle, etc..
Lasso :: Lasso (v. t.) To catch with a lasso.
Plasson :: Plasson (n.) The albuminous material composing the body of a cytode.
Thalassography :: Thalassography (n.) The study or science of the life of marine organisms.