I often think this when I am listening to people talk, and sometimes it can be hard to guess even with context.
I work every Monday, Tuesday and Friday.
I walk every Monday, Tuesday and Friday.
Therefore, to make your pronunciation of these words clearer, try this tip:
‘walk’ sounds like ‘talk’
‘work’ sounds like ‘were’
Practise saying ‘talk, walk, talk, walk’, and ‘were, work, were, work’, and then every time you want to say ‘walk’ or ‘work’, say ‘talk’ or ‘were’ to yourself before you speak. That way, your pronunciation will be clear and easily understood.
Give it a go!