as a connective to compare the similarities of two concepts. Like "like
", this is called a simile
. But as
is more often used in idioms specific to English:
- "Green as grass"
- "Right as rain"
Usually, one concept is more abstract and the other is more concrete - and the connective is intended to be more general than just one situation. When this is so, using "as" may imply that a conceptual metaphor is in effect in other statements:
- "Love as war"
- "Time as a path"
In other words, you can say more generally what an idiom
says: for example, "battle of the sexes" is both a metaphor
and an idiom
that suggests "love as war".
Because of this power, you can restate an idiom or metaphor in a way that makes it clear what it means, and what it might assume.