つぶtsubuつびtsubiつぼtsubo
1.

A small, rounded object that can typically be grasped between the fingers, often referring to seeds or grains.

2.

A term used to describe items of the same type that are collected together, highlighting their common characteristics in terms of shape, size, or quality.

3.

A counting unit specifically for small, round items, such as pills or round candies, indicating a measure of quantity.

4.

A descriptor for tiny, spherical elements in nature, including pearls, raindrops, or eggs, emphasizing their distinct, individual presence.

Example:

2粒の涙が彼女のほおを流れ落ちた。

りゅうし粒子ryuushi
1.

A small, discrete unit that makes up a substance, often referring to the fundamental components such as atoms or molecules.

2.

A tiny fragment or piece of a material, often used to describe a specific part of a larger homogeneous mass, such as sand.

3.

A reference to the fineness or texture of an image or screen, indicating the degree of clarity or detail present in the visual representation.

Example:

空気中のごく小さい粒子がガンのもとになり得る。

おおつぶ大粒ootsubu
1.

Referring to objects or substances that possess a size significantly larger than typical, such as large beads or granules, often used to describe the size of natural elements like raindrops or tears.

2.

Describing a quality that emphasizes the increased size of individual components in comparison to smaller varieties, indicating a notable distinction in size and presence.

3.

Characterizing the visual and physical attributes of something that stands out due to its larger scale, often associated with enhanced impact or prominence.

Example:

大粒の涙が頬を伝って流れ落ちた。

あまつぶ雨粒amatsubuあめつぶ雨粒ametsubu
1.

A small, individual droplet of water that falls from the sky during rainfall.

2.

A unit of rain, characterized by its rounded shape and transient nature as it descends.

3.

A specific form of precipitation, distinguishing each distinct droplet collected from rain.

まめつぶ豆粒mametsubu
1.

A small individual grain of a bean, often used as a metaphor to describe something that is extremely tiny.

2.

A single or individual unit of a legume, which can also represent a minute object, as in "the shadow of something as small as a bean."