opposition

noun

• 1 [mass noun] resistance or dissent, expressed in action or argument:there was considerable opposition to the proposal
• (often the opposition) a group of opponents, especially in sport, business, or politics: the home team made short work of the opposition
• (the Opposition) British the principal parliamentary party opposed to that in office: the leader of the Opposition
• Astronomy & Astrology the apparent position of two celestial objects that are directly opposite each other in the sky, especially the position of a planet when opposite the sun.

• 2a contrast or antithesis:a nature-culture opposition [mass noun]:the opposition between practical and poetic language