Cowslip and Primula

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

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

Primula 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 primula are semantically related. You can use "Cowslip" instead a noun "Primula".