assure vs quality

Some examples from the web:

• Comitology is indispensable to assure refinement of the INSPIRE-instrument.
• Numbered serially to assure correct installation sequence.
• Buffy will be here, I assure you.
• Buffy will be here, I assure you.
• To assure your mother's continued safety.
• Guns assure the highest number of fatalities.
• They assure me Agent Burke is alive.
• EU Member States assure their energy resources by concluding bilateral agreements.
• The differences assure diversity and richness.
• Its excellent mechanical properties assure good resistance in heavy duty conditions.
• Please assure them of my prayers and spiritual solicitude.
• Thereby we assure full transparency and guarantee absolute credibility.
• The common areas are videotaped to assure major security.
• My astrologers assure me that the timing is propitious.
• That, I can assure you... I am.
• I can assure you, it will be very instructional.
• You can assure us that we have all the facts.
• Miss Bennet will receive every possible attention, I assure you.
• Quite the contrary, I assure you.
• I assure you it has no bearing on the case.

Some examples from the web:

• 1 a : peculiar and essential character : nature <her ethereal quality — Gay Talese > b ... 2 a : degree of excellence : grade <the quality of competing air service ...
• ISO 8402-1986 standard defines quality as "the totality of features and characteristics of a product or service that bears its ability to satisfy stated or implied ...
• In business, engineering and manufacturing, quality has a pragmatic interpretation as the non-inferiority or superiority of something; it is also defined as fitness ...
• food of poor quality; silks of fine quality. 4. high grade; superiority; excellence: wood grain of quality. 5. a personality or character trait: kindness is one of her ...