【Bulge】 , 【jut】 , 【stick out】 , 【protuberate】 , 【protrude】 , 【project】 , 【overhang】 , 【beetle】 mean to extend outward beyond the usual and normal line.
【Bulge】 suggests a swelling out in an excessive or abnormal fashion; it may be used when the impression to be given is that there is an imperfection, a defect, or a cause of strain that explains the swelling.
【Jut】 (often with out) and 【stick out】 do not imply abnormality as a rule but construction, formation, or position that permits a thing to extend outside or beyond the flat line of a surface.
【Protuberate】 , which is currently much less used than the corresponding adjective protuberant and the corresponding noun protuberance, implies a swelling or sticking outward (as in a rounded or angular prominence); it does not differ greatly from 【bulge】 , but it often carries less implication of something radically wrong.
Protude implies a thrusting forth especially in an unexpected place; it applies especially to something that does not seem to belong or that sticks out obviously.
In literal use 【project】 is more often intransitive, though in extended uses it is chiefly transitive. Intransitively it may mean to 【jut】 out or to 【protrude】 .
In its transitive use, however, it carries implications of throwing or casting forward both in literal use and especially in extended use when it refers to thoughts, conceptions, or feelings; thus, one projects not only his ideas or thoughts but his powers (as of imagination or comprehension), as if by throwing them out, so that they reach their goal effectively.
Often the idea of extending beyond the usual and normal line gives way to other implications derived especially from psychology, mathematics, and magic, and the word then means simply to externalize or to free oneself from.
Both 【overhang】 and 【beetle】 imply a jutting out over the support or base; 【overhang】 sometimes connotes a threatening position, while 【beetle】 often suggests precariousness or ominousness.