Cowslip and Primrose

Cowslip noun - Early spring flower common in British isles having fragrant yellow or sometimes purple flowers.

Primrose and cowslip are semantically related. In some cases you can use "Primrose" instead a noun "Cowslip".

Primrose noun - Any of numerous short-stemmed plants of the genus Primula having tufted basal leaves and showy flowers clustered in umbels or heads.

Cowslip and primrose are semantically related. You can use "Cowslip" instead a noun "Primrose".