No. Denim is a type of fabric. Jeans are a type of clothing.
Assuming that both materials are made of denim, the answer would be no. It is a common fashion rule that only one denim object should be worn at the same time. Wearing multiple denim objects is "overkill" and the material of the denim makes your whole body look stiff, not a very good first impression.
en jean
Jean jackets are typically made of denim, which is a durable cotton twill fabric known for its diagonal ribbing. Denim is often woven with a blend of cotton and a small amount of synthetic fiber for added strength and elasticity.
Jeans, jean pants, jean shirts, jean jackets, shoes, almost anything
The Denim Outlet
There are lots of clothing items made with jean fabric, denim, jeans are the most obvious but you can also get denim jackets and shirts in a wide variety of colours and styles
In French, "jean" is masculine when referring to denim pants and is a unisex name when referring to a person.
Jean de Nimes made the first "de nim" ( also hence "jean's). Nimes is in France.
Jean - just like jeans (denim) Elan - El - Anne.
Blue jean (denim) pants.
Levi-Strauss
Jean is a French male first name, equivalent to the English 'John'. In some regions, the nickname 'jean-jean' used to mean 'simple-minded', but this is not understood any more in modern French.