Adult
Biologically, an adult is a human or other organism that has reached sexual maturity. In human context, the term adult additionally has meanings associated with social and legal concepts. In contrast to a "minor", a legal adult is a person who has attained the age of majority and is therefore regarded as independent, self-sufficient, and responsible. The typical age of attaining adulthood is 18, although definition may vary by legal rights and country.
Adult Education
Adult education is a practice in which adults engage in systematic and sustained self-educating activities in order to gain new forms of knowledge, skills, attitudes, or values. It can mean any form of learning adults engage in beyond traditional schooling, encompassing basic literacy to personal fulfillment as a lifelong learner.
Education
Education is the process of facilitating learning, or the acquisition of knowledge, skills, values, beliefs, and habits. Educational methods include storytelling, discussion, teaching, training, and directed research. Education frequently takes place under the guidance of educators, but learners may also educate themselves. Education can take place in formal or informal settings and any experience that has a formative effect on the way one thinks, feels, or acts may be considered educational. The methodology of teaching is called pedagogy.
Social
Living organisms including humans are social when they live collectively in interacting populations, whether they are aware of it, and whether the interaction is voluntary or involuntary.
Education
For rigorous teachers seized my youth,
And purged its faith, and trimm’d its fire,
Show’d me the high white star of Truth,
There bade me gaze, and there aspire.
Matthew Arnold, Stanzas from the Grande Chartreuse (1855), st. 12
Education
What we need is to justify coercion, paternalistic control, blame, scolding, and punishment - all of which are less evident in trigonometry class than in a fourth grade learning long division.(...) I have argued that blame, scolding, and punishment in public schools - what I have called "the ordeal" - can be successfully defended. Students have a duty to learn, and can be held responsible for violating whatever rules, policies, or instructions are enforced to ensure that they do so.
Charles Howell - Syracuse University: Education, Punishment, and Responsibility
Education
Parents thought it was enough to bring their children into the world and to shower them with riches, but had no interest in their education. There are severe laws against people who expose their children and abandon them in some forest to be devoured by wild animals. But is there any form of exposure more cruel than to abandon to bestial impulses children whom nature intended to be raised according to upright principles to live a good life? If there existed a Thessalian witch who had the power and the desire to transform your son into a swine or a wolf, would you not think that no punishment could be too severe for her? But what you find revolting in her, you eagerly practise yourself. Lust is a hideous brute; extravagance is a devouring and insatiable monster; drunkenness is a savage beast; anger is a fearful creature; and ambition is a ghastly animal. Anyone who fails to instil into his child, from his earliest years onwards, a love of good and a hatred of evil is, in fact, exposing him to these cruel monsters.
Erasmus, “On Education for Children,” The Erasmus Reader (University of Toronto Press: 1990), p. 74