The Spanish word 'tocón' meaning 'tree stump' comes from the Spanish word 'tueco' (also meaning 'stump') combined with the augmentative suffix '-ón'. The augmentative suffix '-ón' is commonly used in Spanish to indicate something large or emphasize the size of something. So 'tocón' essentially means 'large stump' or emphasizes the substantial nature of the tree stump.

The word 'tueco', meaning 'stump', is a simpler and related form, though it is less commonly used in modern Spanish than 'tocón'.

There are no direct English cognates for 'tocón' or 'tueco'. However, English speakers might find it helpful to remember that the suffix '-ón' in Spanish often corresponds to something large or notable in size, similar to how English sometimes uses 'big' or 'great' as prefixes to emphasize size.