Translation guide
The plant family Poaceae (grasses) is referred to in Japanese primarily by the scientific term イネ科, or more generally as イネ科植物. In everyday contexts, people usually talk about specific types of grass rather than the family as a whole.
Referring to the botanical family of grasses in a scientific or technical context.
Talking about grasses in everyday language, not necessarily the scientific family.
General word for grass or weeds. Not specific to Poaceae, but used in daily conversation.
In Japanese, the family name is formed by adding 科 (か) to a representative genus, here イネ (rice). This pattern is used for most plant and animal families.
The English word 'Poaceae' is highly technical. In most situations, you will not need to refer to the entire grass family. Instead, use specific grass names or general terms like 草.
Plants of the family Poaceae are distributed worldwide.
Literally 'Poaceae plants'. Used when specifically referring to members of the family.
Poaceae plants include many cereal grains.
I cut the grass in the garden.
Lawn grass, turf. Refers to maintained grassy areas.
I lay down on the grass in the park.