• The coming together or gathering of things at a certain point, usually referring to ideas, influences, or events.

• Required by law or rules; compulsory.

• Lack of variety and interest; tedious repetition and routine.

• A confusing or difficult problem or question, often with no clear solution.

• To waste (something, especially money or time) in a reckless or foolish manner.

Without fault or error; perfect or flawless in quality or performance.

• Critical observation or examination; careful inspection or examination.

• Relevant or applicable to a particular matter; relating directly to the subject at hand.

Having the ability to produce the desired effect or result;

• To provide evidence or proof to support or prove the truth of something.

Representing the most perfect or typical example of a quality or class.

• Producing a great deal of profit; profitable.

•  A complete failure or disaster, often resulting in embarrassment or loss.

• Dealing with things sensibly and realistically, based on practical rather than theoretical considerations.