Inferior

n. person who ranks lower than another, subordinate

adj. subordinate, of low rank; of lesser importance; near the bottom; poor in quality, substandard; located under or below

In sciences dealing with the anatomy of animals, precise anatomical terms of location are necessary for a variety of reasons. Non-scientists often wonder why zoological and human anatomists use complex terminology to describe locations on a body, when common terms like "up", "down", "top" and "bottom" could be used instead.
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Noun
1. one of lesser rank or station or quality
(antonym) superior, higher-up, superordinate
(hypernym) follower
2. a character or symbol set or printed or written beneath or slightly below and to the side of another character
(synonym) subscript
(hypernym) character, grapheme, graphic symbol
Adjective
1. of or characteristic of low rank or importance
(antonym) superior
(similar) humble, low, lowly, modest, small
(see-also) low
2. of low or inferior quality
(antonym) superior
(similar) bad
(see-also) worst
(attribute) quality, caliber, calibre
3. inferior in rank or status; "the junior faculty"; "a lowly corporal"; "petty officialdom"; "a subordinate functionary"
(synonym) junior-grade, lower, lower-ranking, lowly, petty(a), secondary, subaltern, subordinate
(similar) junior
4. written or printed below and to one side of another character
(synonym) subscript
(classification) printing, printing process
5. having an orbit between the sun and the Earth's orbit; "Mercury and Venus are inferior planets"
(antonym) superior
(classification) astronomy, uranology
6. lower than a given reference point; "inferior alveolar artery"
(similar) bottom(a)
(classification) anatomy, general anatomy
7. falling short of some prescribed norm; "substandard housing"
(synonym) deficient, substandard
(similar) nonstandard

prep. below, under

pref. under

adj. lower; inferior; base; less

n. inferior, person who ranks lower than another, subordinate

n. less, without, lacking

adv. below, hereinafter

prep. under, below, beneath