Multifil vs Multifid - What's the difference?

As a noun multifil

is a multifilament yarn.

cleft into many parts or lobes.

(en noun)

A multifilament yarn.

(-)

Cleft into many parts or lobes.

*Pseudodoxia Epidemica , by Sir Thomas Browne, 1646:

For animals multifidous, or such as are digitated or have several divisions in their feet;

*A Student's Text-book of Zoology , by Adam Sedgwick, et al., 1898:

Helicidae: Land-snails...genital organs generally with a dart and multifid vesicles.

* :

The style is usually 2-lobed or bifid ... or rarely multifid.

* multifidus muscle