Probable and likely are both adverbs that express the chance of something happening, but they have slightly different meanings and uses. Likely suggests a higher probability than probable. Something that is likely is more expected to happen compared to something that is probable. Probable suggests a reasonable chance of something happening, but it doesn't imply the same level of certainty as likely.
Here are some examples to illustrate the difference:
Notice how 'likely' implies a stronger expectation of rain than 'probable' does for the lateness. 'Likely' suggests a higher degree of certainty.
Another example:
In summary, while both words indicate a possibility, 'likely' suggests a greater probability and higher expectation than 'probable'. Choosing between them depends on the nuance you want to convey and the strength of the expectation.
Happy learning!