Erythrocyte and White blood cell

Erythrocyte noun - A mature blood cell that contains hemoglobin to carry oxygen to the bodily tissues; a biconcave disc that has no nucleus.

White blood cell and erythrocyte are semantically related. in blood corpuscle topic. In some cases you can use "White blood cell" instead a noun "Erythrocyte".

White blood cell noun - Blood cells that engulf and digest bacteria and fungi; an important part of the body's defense system.

Erythrocyte and white blood cell are semantically related. You can use "Erythrocyte" instead a noun phrase "White blood cell".