Gruit was a combination of herbs, commonly including sweet gale (Myrica gale), mugwort (Artemisia vulgaris), yarrow (Achillea millefolium), ground ivy (Glechoma hederacea), horehound (Marrubium vulgare), and heather (Calluna vulgaris).
Introvert and extravert. Introvert and extravert, basic personality types according to the theories of the 20th-century Swiss psychiatrist Carl Jung.
Examples include the Big Five model, Jung's analytical psychology, Hans Eysenck 's three-factor model, Raymond Cattell 's 16 personality factors, the Minnesota Multiphasic Personality Inventory, and the MyersâBriggs Type Indicator. Extraversion and introversion are typically viewed as a single continuum.