Misc: Who painted the Mona Lisa?

Questions

Common name applied to a group of vegetable products, both amorphous & crystalline, obtained from various plants, & important commercially in the tanning of leather?

Common name applied to a perennial, trailing herb of the morning glory family?

Common name applied to any of a family of evergreen shrubs & trees?

Common name applied to birds of about 14 genera of the pheasant family?

Common name applied to certain large African monkeys & sometimes to the closely related gelada?