a seed / a pit or stone in a fruit / a gamete (reproductive cell such as a spermatozoan or egg) / a lineage, bloodline / an origin, cause / the materials or ingredients from which something is made

difficult / hard, probably impossible

sowing, the spreading of seed on the ground for growing a crop / (rare, medicine) dissemination (the spreading out of cells within the body, particularly cells of an invasive disease or of cancer)

(rare) sowing, the spreading of seed on the ground for growing a crop / (medicine) dissemination (the spreading out of cells within the body, particularly cells of an invasive disease or of cancer)

(rare, transitive) to sow, to spread seed on the ground for growing a crop

(transitive) to sow, to spread seed on the ground for growing a crop

seed / plant, sow / class, kind, variety / (taxonomy) species

a seed / a kind, type, sort, class, or category / (taxonomy) a species

counter for number of kinds or types

an origin, cause / a type, class / an interest, appeal