against

"He successfully climbed the mountain."

"The competition for this job is strong."

"The lawyer had a background in computer science."

"The preparation for the history test took her several hours. "

"to bring a thing into comparison with another;  there is no comparison between them"

"The student's opposition to the new school rules caused a disruption. "

"This flow chart represents the assignment of tasks in our committee."

""Because of unforeseen circumstances, the school trip was cancelled." "

"The counterbalance on the school's large swing set kept it level. "

"The setting sun silhouetted the trees against the bright orange sky. "

"Often the anticipation of a shot is worse than the pain of the stick."

"We challenged the boys next door to a game of football."