むしmushi
1.

A small creature often characterized by a segmented body, exoskeleton, and multiple jointed legs, primarily referring to insects, but also includes other similar organisms such as parasites.

2.

A term used to describe various kinds of small creatures that create sounds associated with different seasons, often evoking emotional and aesthetic response in listeners, like crickets or grasshoppers.

3.

A metaphorical representation of a troublesome thought or idea that negatively influences a person's mental state, often associated with feelings of irritation or unease.

4.

A condition related to children's health that arises from their sensitive physical constitution, typically associated with irritability or specific behavioral problems.

5.

An individual who is obsessed or overly passionate about a particular subject or activity, often to the exclusion of other interests or responsibilities.

Example:

彼女はが大嫌いだ。

こんちゅう昆虫konchuu
1.

A diverse group of arthropods characterized by a body divided into three main parts: the head, thorax, and abdomen, typically possessing six legs and often having wings that can be present in two pairs; this group undergoes various forms of metamorphosis, distinguishing between those that do and do not have wings.

2.

A significant category of invertebrates, comprising over a million species worldwide, representing a large portion of Earth's biodiversity, with most species adapted to terrestrial environments, although some inhabit freshwater.

3.

An organism that plays crucial roles in the ecosystem, often involved in pollination, decomposition, and serving as a food source for various animals, exhibiting a range of behaviors and life cycles, from solitary insects to those that form complex social structures.

Example:

趣味は昆虫を集めることです。

いもむし芋虫imomushiいもimoむしmushiイモムシimomushi
1.

A type of caterpillar that is the larval stage of moths and butterflies, typically characterized by a relatively large size and a smooth body without prominent hair or bristles.

2.

A colloquial term for caterpillars that are not classified as fuzzy or spiny, predominantly referring to those that feed on the leaves of plants, such as sweet potatoes.

3.

A non-specific term for caterpillars that do not exhibit noticeable bristles or hairs on their bodies, often associated with the fall season in literature.

Example:

この芋虫がきれいな蝶になるのだ。

nakiむしmushi
1.

A person who tends to cry easily and frequently over minor incidents, often characterized by a sensitive or emotional nature.

2.

A term used to mock or describe someone, particularly children, who exhibits a propensity to burst into tears at trivial matters.

3.

A colloquial expression referring to someone who demonstrates exaggerated emotional responses, especially in situations where strength or resilience might be expected.

Example:

彼は相変わらず泣き虫だ。

こうちゅう甲虫kouchuu
1.

A diverse group of insects characterized by a hard, protective outer shell and usually distinguished by their unique body shapes and sizes, including species like the rhinoceros beetle and firefly, which are commonly found in various habitats.

2.

Insects belonging to the order Coleoptera, known for their ability to thrive in numerous environments, displaying a wide array of colors and patterns, with many species exhibiting notable behaviors such as nocturnal activity and feeding on decaying plant material.