Praxilla seems to be a derivative of Ancient Greekpraxis meaning “practice, action, deed” via Ancient Greek prassein (to do, practice) which ultimately derives from a PIE root word. In philosophy, praxis is a term used to refer to the act of engaging or practicing ideas, as well as also referring to something that is habitual or established practice.
Praxilla is the name of a 5th century Greek poetess who originated from Sicyon, an Ancient Greek city located close to Corinth. There isn’t much known about her, very little of her own work surviving only in fragments, though she is mentioned as one of the nine earthly muses listed by Antipater of Thessalonica (a Greek writer and poet).
Sonia is a variant spelling of Sonya, a Russian diminutive of Sofiya, the Russian, Ukrainian, and Bulgarian form of Sophia which comes from Ancient Greek sophíaσοφῐ́ᾱ meaning “wisdom”, originally connoting the meaning of skill or cleverness, especially in regards to a craft or someone who was wise and learned; it derives from Ancient Greek sophos which originates from an unknown origin.
Sonia is also a popular Indian female name though in this case it seems to be derived from Sanskrit sonāसोना meaning “gold” via suvárna (meaning “gold” as a noun, and “gold, golden color; bright, brilliant hue; good color” as an adjective), which ultimately derives from a PIE origin.
Origin: unknown; Proto-Indo-European
Meaning: ultimately from Sophia meaning “wisdom”; is also an Indian female name meaning “gold”