אולי כדאי לנסות איות אחר או כתיב מלא:
communication conversation » communication information, communication cohesion, communication communication
directional database » dimensional database, dimensional databases, relational database
database optimizing » databases optimizing, database optimising, database optimized
conversation skill » conversation social, conversation show, conversation guide
skill directional » scale directional, bi directional, local directional

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