Sentence:  German dialects show a great deal of <WSD>heteronymy</WSD> for spring and autumn, English ones mainly for autumn. This is surprising in view of the fact that historically the English terms for 'spring' show greater <WSD>heteronymy</WSD> than those for 'autumn'. 
Meaning of the word marked with <WSD> tags:  The use of multiple names for a single person or thing; polyonymy