Popcorn and Zea mays

Popcorn noun - Corn having small ears and kernels that burst when exposed to dry heat.

Zea mays and popcorn are semantically related. In some cases you can use "Zea mays" instead a noun "Popcorn".

Zea mays noun - Tall annual cereal grass bearing kernels on large ears: widely cultivated in America in many varieties; the principal cereal in Mexico and Central and South America since pre-Columbian times.

Popcorn and Zea mays are semantically related. Sometimes you can replace term "Popcorn" with "Zea mays", this terms are similar.