LGBTQ vs LGBTQIA

LGBTQ and LGBTQIA both are nouns.

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

As nouns, LGBTQ and LGBTQIA are synonyms defined as:

LGBTQ and LGBTQIA: 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 LGBTQ include LGBT+, LGBT, LGBTQIA+.

LGBTQ (noun)	LGBTQIA (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