What's the difference between pantile and pentile?

Pantile

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Definition:

• (n.) A roofing tile, of peculiar form, having a transverse section resembling an elongated S laid on its side (/).

Example Sentences:

Pentile

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Definition:

• (n.) See Pantile.

Example Sentences:

• (1) I.A.-1903) with a 2-metoxi-6-n-pentil-p benzoquinone structure, presented a strong antineoplastic action in the cases treated.
• (2) I.A.U.F.Pe-1903) named as primin (2-metoxi-6-n-pentil-benzoquinone), are described.