Define the following terms.
elevation
Define the following term：
amelioration
Answer the following questions. Your answers should be clear and short.
It is a compliment to refer to a person as a nimble one in Britain five hundred years ago? Give your reason for your answer.
Define the following terms
amelioration
The process of narrowing meaning is also called ( ) .
The word accident originally meant "event", but now means "unfortunate event" only. This example shows （ ）of meaning.
Poison once meant simply "drink", but now means "poisonous drink". This is an example of（ ）of meaning.
The word disease once meant discomfort, but now means illness. This is an example of（ ）of word-meaning.
The word"meat", which originally meant"food", but now has come to mean "flesh of animals", is an example to illustrate （ ）of meaning.
（ ）is a process by which a word of wider meaning acquires a specialized sense. For example，the original meaning of the word“meat” was food and the modern meaning is edible flesh.
（）is a process by which a word of wide meaning acquires a narrower or specialized sense.
When a common word is turned into a proper noun, the meaning is （）accordingly.
Which of the following words has NOT undergone narrowing of meaning?（ ）
（ ）is not the narrowing of word-meaning.
Narrowing can be illustrated by the following example:（ ）
Some phrases containing material nouns are shortened and only the material nouns are left to refer to objects made of them, for example, silver now used for "silver dollar". This is a process of（ ）of meaning.
Word meaning changes by the mode of narrowing, which can be illustrated by the word "( )".