Spiraea prunifolia and Spirea

Spiraea prunifolia noun - Shrub having copious small white flowers in spring.

Spirea and Spiraea prunifolia are semantically related. In some cases you can use "Spirea" instead a noun phrase "Spiraea prunifolia".

Spirea noun - A Japanese shrub that resembles members of the genus Spiraea; widely cultivated in many varieties for its dense panicles of flowers in many colors; often forced by florists for Easter blooming.

Spiraea prunifolia and spirea are semantically related. Sometimes you can replace phrase "Spiraea prunifolia" with "Spirea", this terms are similar.