convert vs retrofit

To change (something) from one use, function, or purpose to another. 

To express (a quantity) in alternative units. 

To score extra points after (a try) by completing a conversion. 

To appropriate wrongfully or unlawfully; to commit the common law tort of conversion. 

To induce (someone) to adopt a particular religion, faith, ideology or belief (see also sense 11). 

To score a spare. 

To perform the action that an online advertisement is intended to induce; to reach the point of conversion. 

To undergo a conversion of religion, faith or belief (see also sense 3). 

To transform a material or positional advantage into a win. 

To become converted. 

To score (especially a penalty kick). 

To change (one proposition) into another, so that what was the subject of the first becomes the predicate of the second. 

To express (a unit of measurement) in terms of another; to furnish a mathematical formula by which a quantity, expressed in the former unit, may be given in the latter. 

To increase one's individual score, especially from 50 runs (a fifty) to 100 runs (a century), or from a century to a double or triple century. 

To transform or change (something) into another form, substance, state, or product. 

To exchange for something of equal value. 

To give new characteristics or make alterations (to someone or something) to suit them to changed circumstances. 

To supply (a device, structure, etc.) with new components or parts that were not previously available or installed; to modernize. 

Synonym of backport (“to retroactively supply a fix or feature to a previous version of a software product at the same time or after supplying it to the current version.”) 

To supply a device, structure, etc., with new components or parts that were not previously available or installed. 

To add or substitute (new components or parts) that were not previously available for or installed in a device, structure, etc.