Fertile
What it means
Meaning 1
Able to sustain abundant biological growth.
Reach for it when describing soil, land, or an organism's capacity to produce new life
The river leaves a strip of fertile ground along the lower field.
Meaning 2
Rich in possibilities that can develop into ideas or results.
Reach for it when describing an imagination, discussion, or situation that generates useful possibilities
The unresolved question became fertile ground for three new experiments.