field
The German word 'Feld' is a noun and is used to describe an open area of land, such as a field for growing crops or playing sports. It can also be used metaphorically to refer to a particular area of study or interest, similar to the English word 'field'.
A field is for planting.
This phrase is conveying the primary use of a field which is for planting crops. The verb 'ist' stands for 'is' denoting existence. 'Zum' is a contraction of 'zu dem' translating to 'for the'. 'Pflanzen da' refers to 'for planting' which signifies the purpose of the field.
I can see a field from my window.
This is a simple descriptive sentence where the speaker is describing their view from a window. 'Ich sehe' means 'I see'. 'Von meinem Fenster aus' describes the vantage point from which the field can be seen, translating to 'from my window'.
The cornfield is very green.
In this phrase, the speaker is commenting on the color of a specific field, a cornfield. 'Das Maisfeld' means 'the cornfield'. 'Ist sehr grün' translates as 'is very green'. The appearance of the field is described here using a simple adjective-verb structure.