위해서(wi-hae-seo, wihaeseo)
A connective ending indicating the purpose of an action or behavior
When to use
explaining action purpose, emphasizing reason for action, purpose-focused sentences
The nuance
Attached after verbs or adjectives to show that the action is performed for a certain purpose. Mainly used to clarify the purpose of an action within a sentence.
위한(wi-han, wihan)
An attributive form modifying a noun to indicate the noun's purpose or use
When to use
modifying noun purpose, attributive modifier role, explaining purpose within noun phrase
The nuance
Used before a noun to indicate that the noun has a particular purpose. Mainly used within noun phrases to explain purpose.