Penumbra /pɪˈnʌmbrə/ ~ The partially shaded outer region of the shadow cast by an opaque object. A peripheral or indeterminate area or group.
Parallax (from Ancient Greek παράλλαξις (parallaxis) ‘alternation’) is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
Ebullience /ɪˈbʊlɪəns/ ~ The quality of being cheerful and full of energy; exuberance.
Mellifluous /mɛˈlɪflʊəs/ ~ (Of a sound) Pleasingly smooth and musical to hear.
Concurrence is the fact of two or more events or circumstances happening or existing at the same time. Agreement or consistency.
Valorous /ˈvalərəs/ ~ Showing great courage in the face of danger, especially in battle.
Loquacious /ləˈkweɪʃəs/ ~ Tending to talk a great deal; talkative.
Panacea/ˌpanəˈsiːə/ ~ A solution or remedy for all difficulties or diseases.
Quirky /ˈkwəːki/ ~ Having or characterized by peculiar or unexpected traits or aspects.
Juxtaposition ~ The fact of two things being seen or placed close together with contrasting effect.