The words quiet and quite sound alike in pronunciation, but aren't the same at all. Quiet is an adjective which often indicates some sort of restraint, and quite is an adverb which is used in intensifying...

“Has” and “Have” denotes possession, they are form of the word ‘had”. “Has” is used for singular subjects; whereas “Have” is used in case of plural subjects.

Quality assurance and testing are often confused. Quality assurance studies the manufacturing process and determines the defect in the production process, whereas testing is the process of inspecting the...

QA and QC are both concerned with the quality of products. ‘Quality Assurance’ is process orientated and focuses on defect prevention, whereas ‘Quality Control’ is product oriented and focuses on defect...

The term ‘upon’ is more formal than the term ‘on’. Although they both convey the same meaning, their difference is based on the context in which they are used.