High-Yield Distinctions

Pair / family	Fast test
Content vs Document	What is inside vs the object/container
Document vs Record	Communication/work object vs evidence under records rules
Content Management vs Records Management	Organize/publish/reuse vs evidentiary retention/compliance/disposition
Vocabulary View vs Micro-controlled Vocabulary	subset only vs subset + specialized extensions
Synonym Ring vs Authority List	equals vs preferred term + variants
Taxonomy vs Thesaurus vs Ontology	classify/navigation vs broader/narrower/related terms vs rich semantic domain model
Push vs Pull vs Interactive	scheduled/subscribed vs user request vs dynamic two-way exchange
Processing vs Review vs Analysis	prepare/reduce vs responsive/privileged decision vs understand facts/relationships
Native vs Near-native production	original format vs close converted/extracted form
Content Model vs IA	reusable component structure vs navigation/search structure of information space
ECM vs CMS vs DMS	enterprise umbrella vs publishing lifecycle vs document/file control
Precision vs Recall	purity of retrieved set vs coverage of relevant population

Must-apply cues

anticipated litigation + scheduled deletion → Preservation / Legal Hold.
lots of irrelevant results → improve Precision.
missing known relevant documents → improve Recall.
one approved term + redirected variants → Authority List.
equivalent terms treated equally → Synonym Ring.
reusable cross-channel content → Content Model.
poor navigation/tags/search despite good content → Information Architecture.
high-impact regulated procedure change → Formal Control.
low-risk store-and-retrieve need → Custody Control.
technically sound ECM but low adoption → readiness/sponsorship/workflow/training/change management.