【Hide】 ,  【conceal】 ,  【screen】 ,  【secrete】 ,  【cache】 ,  【bury】 ,  【ensconce】  are comparable when meaning to withdraw or to withhold from sight or observation.  【Hide】  , the general term, and  【conceal】  are often interchangeable.

But  【hide】 may or may not suggest intent or a putting into a place out of the range of others' sight.

【Conceal】 , on the other hand, more often implies intention or effective hiding or a refusal to divulge.

【Screen】 implies a hiding or concealment of someone or something in danger of being seen or known by interposing between him or it and others something (as a 【screen】 or curtain) which shelters and prevents discovery.

【Secrete】 implies a depositing, often by stealth, in a place screened from view or unknown to others.

【Cache】  implies an even more carefully chosen hiding place than  【secrete】 , for it usually implies protection from thieves or from the elements; sometimes the notion of secure storage more or less completely obscures that of concealment.

【Bury】 implies a covering with or a submerging in something that hides or conceals or serves as a hiding place.

【Ensconce】 in the relevant sense implies concealment especially in a raised or enclosed place.