alluring (n.)youdaoicibaDictYouDict
1530s, "action of attracting," verbal noun from allure (v.).
attract (v.)youdaoicibaDictYouDict
early 15c., from Latin attractus, past participle of attrahere "to draw, pull; to attract," from ad- "to" (see ad-) + trahere "draw" (see tract (n.1)).

Originally a medical term for the body's tendency to absorb fluids, nourishment, etc., or for a poultice treatment to "draw out" diseased matter (1560s). Of the ability of people or animals to draw others to them, it is attested from 1560s; of physical forces (magnetism, etc.), from c. 1600 (implied in attraction). Related: Attracted; attracting.
gravity (n.)youdaoicibaDictYouDict
c. 1500, "weight, dignity, seriousness, solemnity of deportment or character, importance," from Old French gravité "seriousness, thoughtfulness" (13c.) and directly from Latin gravitatem (nominative gravitas) "weight, heaviness, pressure," from gravis "heavy" (see grave (adj.)). The scientific sense of "downward acceleration of terrestrial bodies due to gravitation of the Earth" first recorded 1620s.
The words gravity and gravitation have been more or less confounded; but the most careful writers use gravitation for the attracting force, and gravity for the terrestrial phenomenon of weight or downward acceleration which has for its two components the gravitation and the centrifugal force. [Century Dictionary, 1902]
lens (n.)youdaoicibaDictYouDict
1690s, "glass to regulate light rays," from Latin lens (genitive lentis) "lentil," on analogy of the double-convex shape. See lentil. Of the eye from 1719.
In the vernacular of the photographer, anyone crowding to the front of a group, staring into the lens, or otherwise attracting attention to himself is known as a "lens louse." ["American Photography," vol. 40, 1946; the term dates from 1915]