Christmas

bowl / bowl-shaped / covered with a lid / overturned

simple / alone / single

edge; end; corner; margin; tip / extremity; outskirts; boundary / hem / origin; source; starting point / end point; goal; objective; aim / limit; boundary

a shrine

continuing unchanged as long as there has been heaven and earth

A class representative, in the context of an elementary school or junior high school.

(computer science) steepest descent method

(geology, physics) geophysics

restoration