Mouldboard is a crucial component of a plough that helps to turn and aerate the soil, making it fertile for crops. It is also known as a plowshare or a plow blade. Other synonyms for mouldboard are coulter, disk, share, and plow point. A coulter is a blade that slices through the soil before the mouldboard turns it over. A disk is a concave blade that moves the soil sideways as it turns it over. A share is a flat blade that creates the furrow where seeds are sown. Lastly, a plow point is the tip of the blade that helps to penetrate the soil. Knowing these synonyms is important for farmers, gardeners, and anyone interested in the science of farming.