Primordial vs Rudimentary - What's the difference?

As adjectives the difference between primordial and rudimentary

is that primordial is first, earliest or original while rudimentary is of or relating to one or more rudiments.

is a first principle or element.

(-)

first, earliest or original

* Sir W. Hamilton

the primordial facts of our intelligent nature

(biology) characteristic of the earliest stage of the development of an organism, or relating to a primordium

a primordial''' leaf; a '''primordial cell

primeval

* primordial black hole * primordial cell * primordial element * primordial fluctuations * primordial soup

(en noun)

A first principle or element.

(en adjective)

of or relating to one or more rudiments

I have only a rudimentary grasp of chemistry .

Basic; minimal; with less than, or only the minimum, necessary.

His grasp of rudimentary English allowed him at least to do the shopping .

His rudimentary driving skills meant that he was a danger on the road .