1) Beneath 1) Forming a basis 2) Lying nearby but lower 3) Underlying 
underlying
• (a.) Lying under or below. • (a.) Being in a lower situation, though not directly beneath; as, hills and subjacent valleys.
Below or beneath another part. ... Origin: L. Sub-jaceo, to lie under ... (05 Mar 2000) ... 
(sәb-ja´sәnt) located below.
Sub·ja'cent adjective [ Latin subjacens , present participle of subjacere to lie under; sub under + jacere to lie.] 1. Lying under or below. 2. Being in a lower situation, though not directly beneath; as, hills and subjacent valleys. 
Type: Term Pronunciation: sŭb-jā′sĕnt Definitions: 1. Below or beneath another part.
Subjacent: Just beneath or underneath. The opposite of subjacent is superjacent. Other related terms include adjacent and circumjacent. From sub-, under + the Latin jacere, to lie = to lie under.
[adj] - lying nearby but lower
adjective lying nearby but lower; `hills and subjacent valleys`