Seam vs. Seem
First and foremost, one of the main reasons why “seam” can and should never be replaced with “seem” can be seen grammatically: “Seam” is always used exclusively as a noun, whereas “seem” is always used exclusively as a verb. Therefore they can never be considered synonyms for this first and simple reason.
Secondly, their meanings are not even closely related. One means one thing, and the other refers to something completely different. Now, let’s get an in-depth insight into what each word actually means, and when and how to correctly use it.
When do we use “seam”?
Functioning always as a noun, a “seam” is defined as a line of sewing, where two pieces of material have been joined together with stiches. This is its main meaning; however, as a secondary meaning, “seam” may also define a long and thin layer of coal or gold under the ground.
When do we use “seem”?
Unlike “seam”, “seem” always functions as a verb, and has a particular meaning synonymous with the word ‘appear’. When things “seem” to be in a certain way, they appear to be in a particular way or to have some particular qualities.
If you ever find yourself confusing “seam” with “seem”, then this article can help you clarify which is which and see that there is no way that these words can be synonyms or even related. Simply keep in mind that with no connection between their meanings, “seam” is a noun referring either to a sewing line or to a layer of coal, whereas “seem” is a verb used to express that something or somebody appears to be in a particular way.