そそsosogu
1.

To cause a liquid to flow into a container or space steadily and controllably, ensuring the contents are directed precisely where intended, such as filling a vase with water or adding oil to a fire for increased intensity.

2.

To let something fall or descend upon an object or area from above, exemplified by rain falling on leaves or light pouring into a room.

3.

To exert one's focus, effort, or emotional investment towards a particular goal or task, emphasizing the dedication of one's heart and strength to achieve something.

4.

To release or let flow, particularly in the context of emotions, such as tears, suggesting a spontaneous outpouring of feelings.

Example:

私はビニール袋にワインを注ぎ、それからそれを氷水に付けた。

furiそそsosogufuりそそぐrisosogu
1.

To fall or descend continuously and heavily, often used in context to describe something abundant showering down such as rain or criticism.

2.

To pour forth in a relentless manner, signifying a concentrated and intense fall, whether it be of natural elements like rain or metaphorically for overwhelming reactions like voices of disapproval.

Example:

雨がまともに私に降り注いでいた。

tsugu
1.

To direct a liquid towards a specific area or container, resulting in it flowing smoothly into that space.

2.

To apply or distribute a substance in a way that enhances or adds to an existing condition, often implying an increase in intensity or effect.

3.

To concentrate one's emotional or physical effort towards a goal, reflecting a sense of dedication and intent.

Example:

「コーヒーのお替わりいる?」「うん、ぼくのは少なめ、弟のには多めについでね」