A part is defined in relation to a Support, either as a particular part, or as an immediately bordering entity.
Example(s):
[EN] In addition, a study of storms along the eastern COASTof North America found an increase since the mid-
1970s, although storms in this area were still not as frequent as they had been before 1965.
[FR] À basse altitude, dans la troposphère, 30 % du flux solaire retourne directement vers l'espace, réfléchi par l'air, la SURFACEterrestre et les nuages.