LGBTQIA vs LGBTQ

LGBTQIA and LGBTQ both are nouns.

Word	Noun	Adjective	Verb	Adverb
LGBTQIA	Yes	No	No	No
LGBTQ	Yes	No	No	No

As nouns, LGBTQIA and LGBTQ are synonyms defined as:

LGBTQIA and LGBTQ: the community of people who have a non-normative gender and/or sexual identity, including lesbian, gay, bisexual, transgender, intersex, or asexual

Other synonyms of LGBTQIA include LGBT+, LGBT, LGBTQIA+.

LGBTQIA (noun)	LGBTQ (noun)
the community of people who have a non-normative gender and/or sexual identity, including lesbian, gay, bisexual, transgender, intersex, or asexual	the community of people who have a non-normative gender and/or sexual identity, including lesbian, gay, bisexual, transgender, intersex, or asexual