Both of them have the mean beat back or drive away, So I am confused about their using situation.
Which situation is suitable for which one?
Best Answer
According to Etymonline, both words trace back to the Latin verb repellere (drive back, reject), with "repulse" arising from the past participle, repulsus.
In day-to-day speech in Canadian and American English, the difference lies in their connotations.
Repulse has two primary uses outside of academia:
Indicating that something drives someone away by evoking a sense of disgust, drawing more from the "reject" meaning of the Latin root.
(In my experience, this intuitively gets justified by perceiving "repulsive" as the primary concept with "repulse" being thought of as a derivative of it. From there, "repulsive" is seen as being a synonym for "disgusting" unless further qualified as in "repulsive force" to indicate that an academic interpretation was intended.)
(eg. "He was repulsed by what he saw")
In related words such as "repulsion" or "repulsor", which are commonly used in science-fiction when discussing devices which hover, emit blasts of force, or otherwise repel things.
(Primarily because words like "repulsion" or "repulsor" have a construction that feels more like historical academic uses of Latin and, thus, sound more appropriate as jargon than "repelling" or "repeller".)
Repel then serves all uses outside those two roles as the default choice for a native speaker.
The two phrases are both grammatically correct and equally acceptable. They mean the exact same thing: Both refer to utilizing the Internet and are neutral as to its benefits.
Cooperating means working with someone in the sense of enabling: making them more able to do something (typically by providing information or resources they wouldn't otherwise have).
Collaborating means actually working alongside someone (from Latin laborare: to work) to achieve something.
The confusion comes from the overloaded meaning of "work with": In the "Work with me, people" sense, it means to go along with my idea - it's a passive condoning or suspension of disbelief rather than an active involvement. In the "I'm stuck, can you work with me on this problem?" sense it is a request for active commitment.
So in terms of helping achieve something, the ordering is something like collaboration, then cooperation, then passive indifference, then active obstruction.
Best Answer
According to Etymonline, both words trace back to the Latin verb repellere (drive back, reject), with "repulse" arising from the past participle, repulsus.
In day-to-day speech in Canadian and American English, the difference lies in their connotations.
Repulse has two primary uses outside of academia:
Indicating that something drives someone away by evoking a sense of disgust, drawing more from the "reject" meaning of the Latin root.
(In my experience, this intuitively gets justified by perceiving "repulsive" as the primary concept with "repulse" being thought of as a derivative of it. From there, "repulsive" is seen as being a synonym for "disgusting" unless further qualified as in "repulsive force" to indicate that an academic interpretation was intended.)
(eg. "He was repulsed by what he saw")
In related words such as "repulsion" or "repulsor", which are commonly used in science-fiction when discussing devices which hover, emit blasts of force, or otherwise repel things.
(Primarily because words like "repulsion" or "repulsor" have a construction that feels more like historical academic uses of Latin and, thus, sound more appropriate as jargon than "repelling" or "repeller".)
Repel then serves all uses outside those two roles as the default choice for a native speaker.