Conduct means to use or to do Construct means to build or assemble.

The word "conduct" as a noun is pronounced CAWN (like the word dawn) -DUCT. It describes your behaviour or way of acting. For example, "Her conduct was always good. She is polite". "Conduct" can also be a verb. It is pronounced CUNN (like the word gun)-DUCT. It describes leading or conveying or transmitting. For example, "Can you please conduct me to the right sea" OR " Metals conduct heat". The word "construct" means to build or put things together. For example, "can construct that bridge within the required time?" Hope this helps