In the first paragraph, "powerful" can become powerful, but wait, the user specifies 3 variants. So maybe strong? Or are there better synonyms? Maybe versatile?
"valid" becomes functional
"FileMaker Pro 15 is a powerful database management system that allows users to create custom solutions for their business or personal needs." filemaker pro 15 license key
"Verify" could be "Confirm|Validate|Ensure". "Activate" becomes "Activate|Enable|Initialize". But wait, "verify your license key" is part of the sentence, so "verify" is a verb to replace. Similarly "activate the software" would be "activate|start|launch". In the first paragraph, "powerful" can become powerful,
But maybe "license key" as a whole is a term. However, the user wants each term with 3 variants. The term "license key" is two words, but since the user example in the previous answer converted "license key" into individual parts, I'll split them. Maybe versatile
Wait, the phrase is "for their business or personal needs". So "business" can be professional and "personal" can be private.