Rules that exist in many languages that force some parts of a sentence to be used or inflected differently depending on certain attributes of other parts.
A legally binding contract enforceable in a court of law.
An understanding between entities to follow a specific course of conduct.
A state whereby several parties share a view or opinion; the state of not contradicting one another.
Physical danger from the environment, especially with risk of drowning
An obstacle that hinders achievement of a goal.
The state of being difficult, or hard to do.
An objection.
An awkward situation or quarrel.
That which cannot be easily understood or believed.