How many heteronyms are there

* axes[plural of axis] and axes[plural of ax or axe]
* bass[fish] and bass[instrument]
* bow[noun] and bow[verb]
* buffet[furniture] and buffet[strike]
* close[as in near] and close[to shut]
* conduct[actions] and conduct[musical verb]
* content[satisfied] and content[information]
* convict[verb] and convict[noun]
* does[female animals] and does[verb]
* dove[bird] and dove[past of dive]
* entrance[verb] and entrance[noun]
* invalid[adjective] and invalid[noun]
* live[verb] and live[adjective]
* minute[time] and minute[small]
* object[noun] and object[verb]
* polish[association with Poland] and polish[verb]
* primer[elementary textbook] and primer[undercoat of paint]
* produce[verb] and produce[noun]
* read[present tense] and read[past tense]
* record[noun] and record[verb]
* row[a noisy disturbance] and ro