fuzzy/vague/blurred/indistinct/blur/obscure/dim/confuse

Has/Is/Can/Allow/Should

intuitive/instinctive/spontaneous/innate/involuntary(voluntary)
If you have an intuitive [idea] or [feeling] about something, you [feel] that it is [true] although you have no [evidence/proof] of it.
A positive pregnancy test soon confirmed her intuitive feelings.
Many women experience sickness during pregnancy.
Attendance on the course is purely voluntary

storage/store/save/memory/preserve/keep/conserve/hold
compatible with/compatibility

intermediate layer
comprehensive/composite/man-made/complex
synthetic

concern
discern/detect
concert/disconcert

discrete concrete

petition for appeal