Answer:

concepts

AnswerCrossword Clue
CONCEPTSIdeas
CONCEPTSNotions
CONCEPTSTough categories in 20 Questions
CONCEPTSGeneral notions.
CONCEPTSThoughts.
CONCEPTSIdeas.
CONCEPTSNotions.
CONCEPTSMental images
CONCEPTSThoughts
CONCEPTSInventor's starts
CONCEPTSBroad ideas