Where does “grassland” come from?

I notice this chain has significant problems that make it impossible to write an accurate etymology sentence: 1. The chain appears corrupted or incorrectly ordered - it jumps from English/Old English backwards through PIE to Latin, then back to different Latin forms and PIE again. 2. The languages aren't in a coherent genealogical sequence (Old English doesn't descend from Latin; both descend from PIE). 3. "Land" and forms like "gratum" (pleasant), "gradi" (to step), and "gʰredʰ-" don't form a clear etymological chain for "grassland." 4. The supplied chain doesn't actually support a meaning development for grassland. I cannot responsibly write the requested sentence because doing so would spread misinformation. A proper grassland etymology would trace it through Old English combinations or later formations, but this chain doesn't support that narrative. Could

grassland (English): An area dominated by grass or grasslike...

Definitions

  1. An area dominated by grass or grasslike...

Ancestry of “grassland”, step by step

grassland traces back through two separate lines of ancestry.

via English grass

StepLanguageWordMeaning
1EnglishgrassAny plant of the family Poaceae, characterized by...
2Middle EnglishgrasA grass; Any plant; especially a herbaceous one;...
3Old Englishgræsgrass
4Proto-West Germanicgrasgrass
5Proto-Germanicgrasągrass
6Proto-Indo-Europeanǵʰreh₁-to become green, grow; to grow; to green, to grow

via English Land

StepLanguageWordMeaning
1EnglishLandThe part of Earth which is not covered by oceans or other bodies of water
2Middle EnglishlandAlternative form of lond; urine
3Old Englishhlandurine
4Proto-Germanichlandąurine
5Proto-Indo-Europeanklān-liquid, wet ground

Words derived from “grassland

Every word from Proto-Indo-European ǵʰreh₁-Every word from Proto-Germanic grasąEvery word from Proto-West Germanic gras