"Concave" Natural Recordings by Native Speakers
The word "concave" refers to a shape that is curved inward or hollowed out. In other words, a concave surface is one that is deeper in the middle than at the edges. This concept is often used in mathematics, architecture, and engineering. For example, a concave mirror is one that is thicker in the middle than at the edges, whereas a convex mirror is one that is thicker at the edges than in the middle.
Concatenative refers to the property of combining two or more words, phrases, or sounds together, often to form a new word, phrase, or sentence. In linguistics, concatenation is the process of linking together smaller units of language to create a larger unit. For example, in prefixation, a prefix is added to a root word to create a new word, such as "un-" + "happy" "unhappy". In concatenative morphology, words are built up from smaller morphemes, such as "run" + "ning" "running".
Concause is a noun that refers to a joint or shared cause, often used to describe a situation where two or more factors or circumstances contribute to a common outcome or effect. It can be thought of as a mutual or collective cause. For example: "The economic downturn and the war concaused a significant decline in international trade."
Concavity refers to a curved or bent shape that is inward, opposite of convexity. It is a property of a shape or a surface where it curves or bends inward, often forming a depression or a hollow. This term is commonly used in mathematics, physics, and engineering to describe the shape of a curve or a surface. For example, a sphere has a concave curvature when viewed from the outside, while a saddle-shaped surface has a concave curvature in two directions.