Answer:
1. Among/Amongst
- This word has two accepted endings (similar terms include amid/amidst and while/whilst). The “-st” ending is much less common in American English.
2. Archaeology/Archeology
- The older spelling here is the “ae” one, which is also more common (especially outside America).
- There are other words in American English that allow the “ae” variation (e.g., esthetics/aesthetics). But with most similar terms, American English prefers the “e” version (e.g., encyclopedia, not encyclopaedia).
3. Axe/Ax
- “Axe” is the most common spelling of this word, especially outside North America. But, in American English, “ax” is a common variant.
4. Collectible/Collectable
- These spellings are both accepted in American English, but “collectible” is by far the most common.
5. Dialog/Dialogue
- These are variations of the same word, but “dialog” is more common in relation to computing (e.g., dialog box) and “dialogue” is used when referring to two people talking.
6. Disk/Disc
- “Disk” is generally more common than “disc,” but there are some cases where this is reversed. For example, in computing, magnetic storage devices are spelled with a “k” (e.g., floppy disk), but optical storage devices (e.g., a CD or DVD) are “discs.”
7. Flyer/Flier
- “Flyer” is the most common spelling here, but “flier” is also used (especially when referring to something that flies rather than a leaflet advertising something).
8. Usable/Useable
- “Usable” is by far the most common spelling of this word, but “useable” is also accepted in all regional dialects of English. Nobody is quite sure why.
