정액.
The fluid containing spermatozoa that is released during ejaculation, especially by male animals.
예문:
"The doctor analyzed a sample of the patient's sperm to check fertility."
"Sperm is typically a white or grayish fluid."
정자.
A mature male reproductive cell, typically consisting of a head and a long tail, capable of fertilizing an egg.
예문:
"Millions of sperm are released in a single ejaculation, but only one is needed for fertilization."
"The sperm uses its tail, or flagellum, to swim toward the female egg."