They both mean
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mamm/o and mast/o
breast
o/o and ov/o and ovul/o
egg
salping/o and salpinx
fallopian tubes
in- and endo-
in
galact/o and lact/o
milk
oophor/o and ovari/o
ovary
-cyesis and -gravida
pregnancy
metr/o and uter/o and hyster/o
uterus
colp/o and vagin/o
vagina
episi/o and vulv/o
vulva
